HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load

HappyRun G18 Pro Tank 4500W Electric Dirt Bike

Price
$1,399.00
$1,399.00
$2,299.00
Shipping calculated at checkout.
Available In Stock
Shipping shown at checkout
7-day return request window
StreetRides coordinates warranty support
Ships from a U.S. warehouse

The HappyRun G18 Pro Tank is the adult Tank-format electric dirt bike in the StreetRides HappyRun lineup at $1,119 sale. A 4500W peak motor with 200 Nm (148 lb-ft) of torque drives a 38 mph top speed and a 75 mile maximum range claim (the longest in the StreetRides HappyRun lineup) from a 60V 35Ah (2100Wh) battery (also the largest in the StreetRides HappyRun lineup). Hydraulic disc brakes with 180 mm front and 203 mm rear rotors, full suspension (hydraulic front fork plus rear spring shock absorber), off-road tires (front 19 inch and rear 17 inch, the largest tire sizes in the StreetRides HappyRun lineup), high-strength carbon steel Tank-format frame, and IPX5 waterproof grade.

Three meaningful differentiators define the G18 Pro Tank vs the rest of the HappyRun line: the Tank-format upright riding posture (vs the motocross-format forward posture on the G300 Pro, G300 SE Ultra, G300 SE Mini, and F18 2.0). The largest 19-inch front wheel in the StreetRides HappyRun lineup (matching only the G300 Pro). And the adult-only 5'3" to 6'5" recommended rider-height range (the other HappyRun mid-drive bikes fit 3'11" to 6'1" riders, including teens).

Single single configuration in black at $1,119 sale from a $2,299 regular price (51 percent off, $1,180 savings, the deepest discount in the StreetRides HappyRun lineup). The G18 Pro is sold and intended as an off-road electric dirt bike (NOT a standard state Class 1, 2, or 3 e-bike). Required protective gear at this performance level is full motocross kit at a typical $300 to $600 additional cost.

The G18 Pro Tank fits the adult rider whose situation matches three conditions: rider height between 5'3" and 6'5" (the 33-inch seat height excludes shorter riders). Preference for Tank-format upright riding posture over motocross-format forward posture. And routes covering varied off-road terrain where the largest 19-inch front wheel in the StreetRides HappyRun lineup absorbs trail obstacles more smoothly than smaller wheels.

Other strong fits: a touring rider on OHV-permitted trails who benefits from the 75 mile maximum range claim (the longest in the StreetRides HappyRun lineup) and the 2100Wh battery (also the largest). A budget-conscious adult dirt-bike buyer at the $1,119 sale price who would otherwise consider the G300 SE Ultra ($1,599) or G300 Pro ($1,899) but prioritizes value over higher peak power. A weekend off-road rider who wants the Tank-format ergonomic comfort over the motocross-format aggression.

Skip the G18 Pro Tank if you are shorter than 5'3" (the 33-inch seat is too tall, the F18 2.0 at 26.5 inches or the G300 SE Mini at 29 inches are the right alternatives). Skip it when you want motocross-format aggressive posture (the G300 SE Ultra, G300 Pro, or F18 2.0 are the motocross answers). Skip it when you want the F18 2.0's 6000W peak power or the G300 Pro's 50 mph top speed. Skip it when your routes are public roads or bike lanes (the G18 Pro is not a standard state Class 1, 2, or 3 e-bike). Skip it when local OHV rules ban high-wattage electric off-road vehicles.

The 4500W peak motor delivers 200 Nm (148 lb-ft) of peak torque and a 38 mph top speed. The Tank-format upright riding posture is the headline performance differentiator from the motocross-format HappyRun bikes. The upright posture is more comfortable for longer rides at moderate speeds but less controllable during aggressive maneuvering (jumps, hard cornering, technical singletrack). The 4500W peak matches the G300 SE Mini but is delivered through a larger 19-inch front wheel and a 17-inch rear wheel for meaningful trail-obstacle absorption.

Hill performance: 4500W peak with 200 Nm (148 lb-ft) torque handles sustained 10 to 12 percent grades comfortably with a 200 lb rider plus typical gear. 15-plus percent grades will work the motor harder. The 38 mph top speed is the lowest among our adult HappyRun dirt bikes (the G300 SE Ultra is 44 mph, the F18 2.0 is 46 mph, the G300 Pro is 50 mph). The lower top speed corresponds to the Tank-format positioning for touring and recreation rather than motocross-style top-speed pursuits.

The 19-inch front wheel paired with the 17-inch rear is the largest tire combination in the StreetRides HappyRun lineup and meaningfully larger than the F18 2.0's 17/14 and the G300 SE Ultra's 17/14. Larger wheels deliver more stable steering at top speed, better trail-obstacle absorption, and more comfortable riding over rough surfaces. The hydraulic front fork plus rear spring shock absorber package matches the G300 SE Ultra's Standard Full Suspension (not the Pro-Grade upgrade).

A 60V 35Ah battery powers the G18 Pro Tank. Total energy is 2100 watt-hours, the largest battery in the StreetRides HappyRun lineup (the next-closest is the G300 SE Ultra at 1860Wh, the F18 2.0 ships 1800Wh). The 60V system voltage matches the G300 SE Ultra and the F18 2.0. Higher voltage delivers more usable power and reduces voltage sag under heavy motor load.

HappyRun publishes a 75 mile maximum range claim, the longest in the StreetRides HappyRun lineup. The figure assumes a 170 lb or lighter rider in mixed pedal-and-throttle riding on dry trails at moderate speeds with warm temperatures. Realistic range under aggressive off-road riding (frequent full-throttle acceleration, hill climbs, jumps, 200 lb adult rider with motocross gear) lands closer to 32 to 48 miles per session. Flat desert OHV parks near Phoenix and Las Vegas sit at the top of that band. Steep mountain trails near Denver and Salt Lake City sit at the bottom. The Tank-format and 38 mph top speed (lower than the F18 2.0 and G300 Pro) help extend real-world range vs the motocross-format bikes at higher speeds.

Charging takes 6 hours from empty to full using the 67.2V charger. A partial charge from empty to 40 to 80 percent state of charge takes about 3 hours, which supports a mid-day recovery between morning and afternoon trail sessions. Use only the included HappyRun charger. Charge in a dry ventilated area outside any living space. The U.S. CPSC Micromobility Information Center publishes safe charging practices that apply to every high-capacity battery in this category.

The G18 Pro Tank is sold and intended as an off-road electric dirt bike. It is not a standard state Class 1, 2, or 3 electric bicycle. The federal low-speed electric bicycle definition uses a 750W motor limit and 20 mph motor-powered speed limit. Many state Class 3 frameworks allow pedal assist up to 28 mph. The G18 Pro Tank exceeds both. Many states classify a 38 mph electric off-road vehicle as an off-highway vehicle (OHV) and require registration, OHV decals, trail permits, or a combination. Some states require liability insurance for OHV use.

HappyRun does not publish UL 2271 (battery system) or UL 2849 (complete electrical system) certification on the current U.S. product page for the G18 Pro Tank. UL certification is uncommon on off-road electric dirt bikes that are not sold for on-road or shared-trail use. The IPX5 waterproof grade supports light-rain riding and water spray from any direction. It does not support submersion or pressure-washing.

Required protective gear at the G18 Pro Tank's performance level is full motocross kit: DOT or Snell rated full-face helmet, motocross goggles, chest protector or body armor, knee and elbow guards or motocross boots with shin protection, motocross gloves. Total gear cost is $300 to $600. Budget for it as part of the real cost of ownership. The Tank-format upright posture does not reduce the gear requirement vs the motocross format. Falls at 38 mph have the same physical consequences regardless of riding posture.

The box ships with the G18 Pro Tank at high pre-assembly (typical for adult electric dirt bikes), a charger, basic tools, and an owner's manual. Package dimensions are 1450 by 330 by 750 mm. Package weight is 143 lb. Final assembly typically involves installing the front wheel and fender, the handlebars, the mirrors (if equipped), and any color-coded plastics. Pumping tires to manufacturer-spec pressure. And verifying battery state of charge plus brake fluid before first ride.

First-ride routine: confirm front and rear tire pressure with a gauge (the 19-inch front and 17-inch rear off-road tires take 8 to 14 PSI depending on terrain, consult the manual for the recommended range), verify both hydraulic brake levers feel firm before any roll, walk the front and rear suspension through full travel by hand, and start in a parking lot or empty paddock area to learn the throttle response. Practice braking from low speeds first to learn the asymmetric rotor sizing (180 mm front, 203 mm rear) and the Tank-format upright braking posture. Save the 38 mph top speed for after 30 to 60 minutes of low-speed practice.

Ongoing ownership: chain lubrication every 200 miles or after wet/muddy rides. Motocross tires need pressure checks before each session and accept regular puncture risk. Carry a small pump and a spare tube. Inspect the hydraulic disc brake pads at 500 miles. HappyRun publishes a 2-year warranty and checkout-calculated continental-U.S. shipping. Confirm warranty term, freight responsibility on warranty returns, and customer-support contact path in writing on your order.

Motor and speed. 4500W peak motor. 200 Nm (148 lb-ft) peak torque. 38 mph top speed. Chain-drive transmission. Tank-format upright riding posture.

Battery and charging. 60V 35Ah battery (2100Wh, the largest in the StreetRides HappyRun lineup). 75 mile maximum range claim (the longest in the StreetRides HappyRun lineup). 6 hour full charge. 3 hour 40 to 80 percent partial charge.

Brakes and tires. Hydraulic disc brakes front and rear. 180 mm front rotor and 203 mm rear rotor. Off-road tires: front 19 inch, rear 17 inch (the largest tire sizes in the StreetRides HappyRun lineup).

Suspension. Full suspension: hydraulic front fork plus rear spring shock absorber.

Frame and dimensions. High-strength carbon steel Tank-format frame. 119 lb bike weight (excluding battery). 19.1 lb battery weight. Approximately 138 lb total with battery. 143 lb package weight. Product dimensions 1803 by 720 by 1105 mm. Package dimensions 1450 by 330 by 750 mm. 350 lb total payload. 33-inch seat height (the tallest in the StreetRides HappyRun lineup). Recommended rider height 5'3" to 6'5" (1.6 to 1.96 meters, adult-only range).

Display, lights, environment. IPX5 waterproof grade.

Pricing and support. Single single configuration in black. $1,119 sale price (regular $2,299, $1,180 / 51 percent off, the deepest discount in the StreetRides HappyRun lineup). checkout-calculated continental-U.S. shipping. 2-year warranty.

At $1,119 sale (down from $2,299), the G18 Pro Tank is the lowest entry price in our adult HappyRun dirt-bike line and the deepest current discount (51 percent off). The hardware list at this price is unusual: 4500W peak motor, 200 Nm (148 lb-ft) torque, the largest 2100Wh battery in the StreetRides HappyRun lineup, the longest 75 mile range claim, the largest 19-inch front wheel matching only the G300 Pro, the 350 lb maximum load matching the G300 SE Ultra, hydraulic disc brakes with the largest 203 mm rear rotor in the StreetRides HappyRun lineup, and the Tank-format adult-only ergonomics.

The honest constraints are off-road only, adult-only rider range, and the 38 mph top speed. The G18 Pro Tank is not a standard state Class 1, 2, or 3 e-bike. The 33-inch seat height excludes shorter teens and adults (the F18 2.0 or G300 SE Mini are the answers for 3'11" to 5'3" riders). The 38 mph top speed is the lowest in our adult HappyRun line. The G300 SE Ultra (44 mph), F18 2.0 (46 mph), and G300 Pro (50 mph) deliver higher top speeds at higher prices. The 51 percent discount is real value but worth verifying parts-availability roadmap with HappyRun customer support before paying.

What matters on the ride: identity as an adult Tank-format off-road electric dirt bike, peak motor power and torque, top speed, the unusually large 2100Wh battery and 75 mile range claim, brake hardware including rotor specifications, tire format with the largest wheel sizes in the StreetRides HappyRun lineup, the full-suspension package, the 33-inch seat height, the 5'3" to 6'5" rider-height range, the 350 lb max load, the 119 lb bike weight, the 19.1 lb battery weight, the package dimensions and weight, the IPX5 waterproof grade, the checkout-calculated continental-U.S. shipping, and the 2-year warranty. What to confirm before ordering: UL certification status (not published), the exact climbing-grade capability, the freight terms on warranty returns, and the parts-availability roadmap for the deeply-discounted model. Worth confirming before a $1,119 purchase decision and before committing to the additional gear and OHV-access infrastructure.
HappyRun G18 Pro Tank 4500W Electric Dirt Bike
  • Overview
  • Specifications
STREETRIDES TAKE The adult Tank-format HappyRun dirt bike at the deepest current discount: 4500W peak motor, 200 Nm (148 lb-ft) torque, 38 mph top speed, 2100Wh battery (largest in the StreetRides HappyRun lineup), 75 mile range claim (longest), 19-inch front wheels (largest), Tank-format upright posture, 33-inch seat with 5'3" to 6'5" adult-only rider range. $1,119 sale (regular $2,299, 51 percent off). Off-road use only.
StreetRides Research Team
Last Reviewed Date: June 24, 2026

Adult Tank-format dirt bike with the largest battery and range

HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load
KEY ADVANTAGES

Why This Ride Stands Out

  • HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load 19-inch front wheels and Tank-format upright posture

    The largest front wheel size in the StreetRides HappyRun lineup absorbs trail obstacles more smoothly. Tank-format upright posture supports longer rides at moderate speeds vs the forward-aggressive motocross format.

  • HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load 60V 35Ah (2100Wh) battery and 75 mile range claim

    The largest battery in the StreetRides HappyRun lineup delivers the longest 75 mile maximum range claim. 6 hour full charge. 3 hour partial charge to 40 to 80 percent for mid-day recovery between sessions.

  • HappyRun G18 Pro Tank adult Tank-format off-road electric dirt bike: 4500W peak motor, 200 Nm torque, 38 mph top speed, 2100Wh battery, 19-inch front and 17-inch rear off-road tires (largest in HappyRun line), hydraulic disc brakes with 203mm rear rotor, carbon steel frame, 33-inch seat, 5'3" to 6'5" rider range, 350 lb max load Adult-only fit with 33-inch seat and 350 lb max load

    The 33-inch seat height fits adult riders 5'3" to 6'5". The 350 lb maximum load matches the G300 SE Ultra. The carbon steel Tank-format frame supports both rider and gear loads for longer touring rides.

Compare your options

Three HappyRun electric dirt bikes across Tank, mid-drive, and motocross-hub-motor formats

HappyRun's adult electric dirt bike line offers three answers across three frame formats. The G18 Pro Tank at $1,119 sale is the adult Tank-format with upright riding posture, 4500W peak power, 38 mph top speed, the largest 19-inch front wheels in the StreetRides HappyRun lineup, the longest 75 mile range claim, and the largest 2100Wh battery. The G300 SE Ultra at $1,599 sale is the full-size mid-drive with 6000W peak, 44 mph, motocross-format forward posture, Pro-Grade Full Suspension, 31.9-inch seat. The G300 Pro at $1,899 is the motocross hub-motor flagship with 6500W peak, 50 mph, 72V system, 31-inch seat. The honest decisions are frame format (Tank vs motocross), motor architecture (mid-drive vs hub motor), rider height range (5'3" to 6'5" Tank vs 3'11" to 6'1" mid-drive vs 5'1" to 6'5" hub), and price tier ($1,119 vs $1,599 vs $1,899).

Why these products
All three are currently in the StreetRides lineup as HappyRun adult electric dirt bikes intended for off-road use. They share the off-road-only legal framing, the requirement for full motocross protective gear, hydraulic disc brakes, full suspension, and HappyRun's standard warranty. The honest decisions are frame format (Tank vs motocross-mid-drive vs motocross-hub), peak power (4500W vs 6000W vs 6500W), seat height (33 vs 31.9 vs 31 inches), and price tier.
StreetRides takeaway

Choose the G18 Pro Tank when you want the Tank-format upright riding posture, the largest wheels for trail comfort, the longest range, the largest battery, and the lowest price in our adult HappyRun dirt-bike line. Choose the G300 SE Ultra when motocross-format ergonomics, more peak power (6000W vs 4500W), and a wider rider-height range matter. Choose the G300 Pro when 50 mph top speed, 72V system, hub-motor simplicity, and the motocross flagship status matter.

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HappyRun G18 Pro Tank 4500W Electric Dirt Bike

$1,399.00
$1,399.00
$2,299.00
Available

Best for: Adult riders 5'3" to 6'5" who want the Tank-format upright riding posture (vs the motocross-format forward posture). Riders who prefer the largest 19-inch front and 17-inch rear tire sizes in the StreetRides HappyRun lineup for the smoothest trail-obstacle absorption. Touring and longer-ride riders who benefit from the 75 mile maximum range claim and the 2100Wh battery. Budget-conscious adult dirt-bike buyers at the $1,119 sale price (51 percent off regular)

The adult Tank-format HappyRun. 4500W peak, 200 Nm (148 lb-ft) torque, 38 mph top speed, 2100Wh battery (largest in the HappyRun line), 75 mile max range claim (longest in the line), 19-inch front wheels (largest in the line), 33-inch seat for adult riders.

Think twice if: Your rider is shorter than 5'3" (the 33-inch seat height excludes them, the F18 2.0 at 26.5 inches or the G300 SE Mini at 29 inches are the right alternatives), you want the F18 2.0's 6000W peak power and 46 mph top speed, or you specifically want the G300 Pro's 50 mph top speed and hub-motor architecture

View product details
HappyRun G300 SE Ultra

HappyRun G300 SE Ultra Mid-Drive Electric Dirt Bike

$1,599.00
$1,599.00
$2,499.00
Available

Best for: Riders preferring the motocross format with the same 6000W peak power as the F18 2.0, the wider 3'11" to 6'1" rider-height range (including teens), and the Pro-Grade Full Suspension upgrade

The motocross-format sibling. Same 6000W peak motor, 44 mph top speed, 31.9-inch seat, Pro-Grade suspension, $480 more than the G18 Pro at $1,599 sale.

Think twice if: You want the G18 Pro's larger 19-inch front wheel, the longer 75 mile range, the 2100Wh battery, the adult-only Tank-format ergonomics, or the deeper 51-percent discount from regular price

View product details
HappyRun G300 Pro

HappyRun G300 Pro 6500W Electric Dirt Bike

$2,199.00 - $2,299.00
$2,199.00 - $2,299.00
$3,499.00
Available

Best for: Riders who want the 6500W peak power, 50 mph top speed, 72V system voltage, and the hub-motor architecture's simpler maintenance

The motocross hub-motor flagship. Higher voltage and top speed, taller motocross-format posture, 31-inch seat, hub motor. $780 more than the G18 Pro at $1,899 sale.

Think twice if: You want the G18 Pro's Tank-format upright posture, the longer 75 mile range, the larger 19-inch front wheel, or the deeper discount. Or your budget caps at $1,200 for the dirt-bike category

View product details
Motor and road speed How much help will I get on ordinary streets and hills? 4500W peak motor. 200 Nm (148 lb-ft) peak torque. 38 mph top speed. Tank format (upright posture vs the motocross format of the G300 Pro)
Evidence
Forty-five hundred watts peak matches the G300 SE Mini's wattage but in a tank-format adult frame with larger wheels. Two hundred newton-meters of peak torque is meaningful for the wattage class and supports sustained climbing. Thirty-eight mph top speed sits between the G300 SE Mini's 36 mph and the F18 2.0's 46 mph. The Tank format positions the G18 Pro for adult-rider upright riding posture (legs and torso more vertical) vs the forward-aggressive motocross posture of the G300 Pro.
 60V 6000W peak mid-drive motor. 240 Nm (177 lb-ft) peak torque. 44 mph top speed. Full-twist throttle. Chain-drive transmission
Evidence
Six thousand watts peak matches the F18 2.0's peak power and represents the upgrade path from the G300 SE Mini's 4500W. The 240 Nm (177 lb-ft) peak torque is in the same class as the F18 2.0's 245 Nm (181 lb-ft) and is the highest in our HappyRun mid-drive line. Forty-four mph top speed sits between the G300 SE Mini's 36 mph and the F18 2.0's 46 mph. The Ultra is the speed step up from the Mini at the same mid-drive architecture. The precision-tuned 60V 35Ah controller delivers consistent power across the full speed range.
 6500W peak motor, 3000W continuous. 50 mph top speed. 120 Nm (89 lb-ft) torque. Half-twist throttle. Off-road use only
Evidence
Fifty miles per hour and 6500W peak put the G300 Pro firmly outside U.S. federal Class 1, 2, and 3 electric bicycle definitions. Federal e-bike status caps motor at 750W and top speed at 28 mph (Class 3 pedal-assist). The G300 Pro is sold and intended as an off-road electric dirt bike, which carries different rules than an e-bike: many states classify it as an off-highway vehicle (OHV) requiring registration, OHV decals, or trail-permit access. Verify state and local rules before riding any public road or shared trail.
Battery and claimed range What route can the battery realistically support? 60V 35Ah (2100Wh) battery (the largest in the StreetRides HappyRun lineup). 75 mile maximum range claim (the longest in the StreetRides HappyRun lineup). 6 hour full-charge time with the 67.2V charger. 3 hour 40 to 80 percent partial charge
Evidence
Twenty-one hundred watt-hours is the largest battery in the StreetRides HappyRun lineup. The 75 mile maximum range claim is the longest in the StreetRides HappyRun lineup, supported by the large battery and the 38 mph top speed (lower than the F18 2.0 and G300 Pro). Realistic range under aggressive off-road riding (frequent full-throttle acceleration, hill climbs, 200 lb rider with motocross gear) lands closer to 32 to 48 miles per session. Flat desert OHV parks near Phoenix and Las Vegas sit at the top of that band. Steep mountain trails near Denver and Salt Lake City sit at the bottom.
 60V 31Ah (1860Wh) battery. 65 mile maximum range claim with 56 to 65 mile realistic range per HappyRun FAQ. The largest battery in our HappyRun mid-drive line
Evidence
Eighteen hundred sixty watt-hours is the largest battery in our HappyRun mid-drive line. The F18 2.0 ships 1800Wh. The G300 SE Mini ships 1248Wh. The HappyRun product page FAQ publishes a realistic 56 to 65 mile range, which is unusually honest for this category. Real-world range under aggressive off-road riding lands closer to 28 to 42 miles per session. The published 56 to 65 mile figure assumes mixed pedal-and-throttle riding at moderate speeds.
 72V 30Ah battery. Up to 70 mile range claim. Roughly 5 hour full charge time. 2.5 hours to reach 40 to 80 percent state of charge
Evidence
A 72V 30Ah pack carries roughly 2160 watt-hours of energy. That is more than double the energy of a typical commuter e-bike. The 70 mile range claim is a manufacturer maximum. Real-world range under aggressive off-road riding with frequent throttle work and varied terrain lands closer to 25 to 40 miles per charge. Plan a return reserve and treat the 70 mile claim as a single-rider, mixed-throttle, dry-trail best case.
Weight and portability Can I store and move it? 119 lb bike weight (excluding the 19.1 lb battery). Approximately 138 lb total with battery. 143 lb package weight. 350 lb total payload. 33-inch seat height (the tallest in the StreetRides HappyRun lineup). Recommended rider height 5'3" to 6'5" (adult-only)
Evidence
The 33-inch seat height is the tallest in the StreetRides HappyRun lineup and is sized for adult riders 5'3" to 6'5". Riders shorter than 5'3" should consider the F18 2.0 (26.5-inch seat) or the G300 SE Mini (29-inch seat). The 350 lb maximum load matches the G300 SE Ultra and is meaningfully above the F18 2.0's 300 lb. The 119 lb bike weight (excluding battery) is the second-lightest among our HappyRun dirt bikes. The G300 SE Mini is 106.9 lb (excluding battery) but with smaller wheels.
 138 lb bike weight (without battery). 21.8 lb battery weight. Approximately 160 lb total with battery. 143 lb package weight. 350 lb maximum load (the highest in our HappyRun mid-drive line). Recommended rider height 3'11" to 6'1". 31.9-inch seat height
Evidence
The 31.9-inch seat height places the G300 SE Ultra between the G300 Pro's 31 inches and the typical motocross format. The same 3'11" to 6'1" rider-height range as the F18 2.0 and G300 SE Mini covers teens and shorter adults. The Ultra is the size step up from the Mini for the same household. The 350 lb maximum load is meaningfully above the G300 SE Mini's 330 lb and the F18 2.0's 300 lb. The Ultra supports heavier riders or more cargo.
 Published bike weight 136.8 lb. Package shipping dimensions 57.3 by 13.2 by 29.5 inches. Not foldable. One frame size (recommended rider height 5'1" to 6'5"). 31 inch seat height. 350 lb max load
Evidence
One hundred thirty-six pounds is the right weight class for a motocross-style electric dirt bike. The 31 inch seat height is taller than a typical e-bike (most adult e-bikes sit at 28 to 30 inches) and matches a small-frame gas dirt bike. The single-size frame with the 5'1" to 6'5" rider range is a wide spread. Riders at the ends of that range should expect a less-optimal fit and may want to compare against the G100 Pro or F18.
Ride comfort Will the fit and contact points suit my route? Off-road tires (front 19 inch, rear 17 inch, the largest tire sizes in the StreetRides HappyRun lineup). Full-suspension package (hydraulic front fork plus rear spring shock absorber). High-strength carbon steel Tank-format frame. Chain-drive transmission
Evidence
The 19-inch front and 17-inch rear tire sizes are the largest in the StreetRides HappyRun lineup and meaningfully larger than the G300 SE Mini's 14/12, the F18 2.0's 17/14, the G300 SE Ultra's 17/14, and the G300 Pro's 19/17. Larger wheels absorb trail obstacles more smoothly, deliver more stable handling at top speed, and improve overall ride comfort over rough terrain at the cost of slightly less low-speed maneuverability. The Tank-format frame supports upright riding posture vs the motocross-format forward posture. This is the choice for adult riders who prefer less-aggressive ergonomics for longer rides.
 Pro-Grade Full Suspension: front hydraulic fork plus rear spring shock absorber (upgraded over the G300 SE Mini's Standard Full Suspension). Off-road tires (front 17 inch, rear 14 inch). High-strength carbon steel frame. Chain-drive transmission. 14 to 104 degree Fahrenheit working temperature range
Evidence
The Pro-Grade Full Suspension is the headline ride upgrade over the G300 SE Mini's Standard Full Suspension. The 17-inch front wheel is meaningfully larger than the SE Mini's 14-inch front. Larger front wheels absorb trail obstacles better, deliver more stable high-speed handling, and maintain better steering feel through tight terrain. The 14-inch rear matches the F18 2.0's rear format. The published working temperature range (14 to 104 Fahrenheit) is helpful for cold-weather riding planning.
 Full suspension: inverted adjustable aluminum alloy front fork with 80 to 120 mm travel. Proprietary HR rear suspension. High-strength carbon steel frame. Front 70/100-19 and rear 70/100-17 motocross tires
Evidence
Inverted front forks are the motocross convention: the larger tubes mount upside-down for stiffness and unsprung-weight reduction under impact. The 80 to 120 mm adjustable travel range lets you tune for trail roughness, jump landings, or street-section comfort. Motocross-format tire sizes (70/100-19 front and 70/100-17 rear) reflect the dirt-bike DNA and are different from the tire sizes used on commuter and fat-tire e-bikes. Replacement availability is at motocross-tire retailers, not e-bike shops.
Braking system What stopping hardware is listed? Hydraulic disc brakes front and rear. 180 mm front rotor and 203 mm rear rotor (the 203 mm rear is larger than the G300 SE Mini's, G300 SE Ultra's, and F18 2.0's 190 mm rotors)
Evidence
The 203 mm rear rotor is the largest in the StreetRides HappyRun lineup and meaningful for sustained downhill braking under the bike's 138 lb total weight at the 38 mph top speed. Hydraulic disc brakes deliver stronger stopping power and less hand fatigue than mechanical discs. The asymmetric rotor sizes (180 mm front, 203 mm rear) reflect the bike's rear-weight bias under braking.
 Hydraulic disc brakes front and rear. 190 mm by 3.4 mm brake disc rotors. Integrated taillight with brake indicator. 700-lumen LED headlight
Evidence
Hydraulic disc brakes with 190 by 3.4 mm rotors are sized appropriately for the 160 lb bike at the 44 mph top speed. The 700-lumen LED headlight is brighter than the G300 SE Mini's 500-lumen front light. The integrated taillight with brake indicator adds rear-vehicle visibility at panic stops. The published rotor thickness (3.4 mm) is a small but meaningful spec detail vs the typical generic rotor.
 Hydraulic front (180mm rotor) and rear (203mm rotor) disc brakes. Aluminum alloy brake levers. 2000-lumen LED front light. Integrated taillight with brake-light indicator. IPX5 waterproof grade
Evidence
Hydraulic discs with 180 mm front and 203 mm rear rotors are sized appropriately for the bike's mass and top speed. This is meaningfully more brake than a typical e-bike. The 2000-lumen front light is genuinely bright (a typical e-bike headlight runs 100 to 500 lumens) and is intended for trail riding at dusk and night. IPX5 supports low-pressure water jets from any direction. The G300 Pro can ride in rain and through puddles, but should not be submerged or pressure-washed.
Electrical safety claim What safety documentation is actually available? HappyRun does not publish UL 2271 (battery) or UL 2849 (system) certification on the current U.S. product page for the G18 Pro. IPX5 waterproof grade
Evidence
The same UL certification absence applies to the G18 Pro as to the rest of the HappyRun dirt-bike line: off-road electric dirt bikes intended for closed-course and OHV-permitted trail use are not always certified under UL because UL is primarily associated with on-road federal-class e-bikes. The IPX5 waterproof grade supports light-rain riding and water spray from any direction.
 HappyRun does not publish UL 2271 (battery) or UL 2849 (system) certification on the current U.S. product page for the G300 SE Ultra. IPX5 waterproof grade. Digital display
Evidence
The same UL certification absence applies to the G300 SE Ultra as to the rest of the HappyRun dirt-bike line: off-road electric dirt bikes intended for closed-course and OHV-permitted trail use are not always certified under UL because UL is primarily associated with on-road federal-class e-bikes. The IPX5 waterproof grade supports light-rain riding and water spray from any direction. The digital display shows speed, battery state of charge, ride mode, and trip distance.
 HappyRun does not publish UL 2271 (battery) or UL 2849 (system) certification on the current U.S. product page for the G300 Pro. The product is categorized and sold as an off-road electric dirt bike rather than as a federal e-bike
Evidence
UL certification is the U.S. safety standard most commonly associated with federal-class e-bikes (Class 1, 2, 3). Off-road electric dirt bikes and OHV-class electric motorcycles are not always certified under UL because they are not sold for on-road or shared-trail use. The lack of UL certification on the G300 Pro page is consistent with its off-road-only positioning and is not unusual at this performance level. Buyers planning indoor storage in shared housing (apartment building, condo board, HOA) should ask HappyRun customer support in writing about insurance acceptance, certification status, and indoor-charging guidance before paying.
Warranty and parts path What happens after the sale? HappyRun 2-year warranty as standard. Free U.S. shipping (continental U.S.). $1,119 sale price (regular $2,299, $1,180 / 51 percent off)
Evidence
The 51 percent discount from $2,299 regular to $1,119 sale is the deepest discount in the StreetRides HappyRun lineup. Verify the sale availability before placing the order. The HappyRun 2-year warranty is published clearly. Confirm the exact warranty term, freight responsibility on warranty returns, and the customer-support contact path in writing on your order before paying.
 HappyRun 2-year warranty as standard. 14-day return. Free U.S. shipping (continental U.S.). $1,599 sale price (regular $2,499, $900 / 36 percent off)
Evidence
The 36 percent discount from $2,499 regular to $1,599 sale is meaningful at this tier. Verify the sale availability before placing the order. The HappyRun 2-year warranty and 14-day return are published clearly. Confirm the exact warranty term, freight responsibility on warranty returns, and the customer-support contact path in writing on your order before paying.
 HappyRun U.S. warranty applies. Free U.S. shipping (continental U.S. only). Orders processed within 24 hours, delivery in 3 to 5 business days. HappyRun customer support published in the product details
Evidence
HappyRun publishes 24-hour order processing and 3 to 5 business-day delivery to the continental U.S. Free U.S. shipping is included at the listed price. Confirm the exact warranty term, freight responsibility on warranty returns, and the customer-support contact path in writing on your order before paying. Buyers in Alaska, Hawaii, or U.S. territories should confirm shipping availability before placing an order.
Methodology and sources
We compared the current HappyRun G18 Pro Tank product page against the G300 SE Ultra and G300 Pro pages, our prior research records for those bikes, and the U.S. CPSC Micromobility Information Center on 2026-06-24. We did not test top speed, range, braking distance, climbing grade, water resistance, durability, or certification. Live price and availability come from this store.

HappyRun G18 Pro Tank, G300 SE Ultra, and G300 Pro product pages, plus the U.S. CPSC Micromobility Information Center.

Sources

Information checked Jun 24, 2026
A closer look

See the product in action

Official exact-model assembly video: HappyRun Sports

Watch an exact HappyRun G18 Pro Tank 4500W Electric Dirt Bike video

HappyRun Sports published this attributable video for the exact model. It is useful product context, not a StreetRides performance test or a promise of current specifications, fit, range, availability, or legal use.
Watch on YouTube Official source
Straight answers based on current specifications, independent testing, and US ownership needs.

Frequently Asked Questions

Tank format refers to the bike's upright riding posture and frame geometry. The G18 Pro Tank puts you in a more upright position with the torso and arms vertical, similar to a touring motorcycle, vs the motocross format's forward-aggressive posture (torso tilted forward, weight on the bars, weight forward over the front wheel).

Why this matters in practice: Tank format is more comfortable for longer rides at moderate speeds because you do not need to support your body weight on your arms and shoulders. The trade-off is reduced control during aggressive maneuvering (jumps, hard cornering, technical singletrack). Motocross format is more controllable in those situations because your weight shifts more naturally to the front and rear wheels.

Practical recommendation: choose the G18 Pro Tank for trail-riding, weekend cruising on OHV-permitted trails, longer-range exploration, and adult rider comfort. Choose the motocross format (G300 SE Ultra, G300 Pro, F18 2.0) for jump-heavy riding, motocross-style trail riding, and aggressive technical terrain.

HappyRun publishes a recommended rider height range of 5'3" to 6'5" for the G18 Pro Tank, vs the 3'11" to 6'1" range on the G300 SE Mini, G300 SE Ultra, and F18 2.0. The 33-inch seat height is the tallest in the StreetRides HappyRun lineup and excludes shorter teens and adults who cannot reach the ground with both feet flat at a stop.

Why this matters in practice: seat height affects safety at slow speeds and stops. A rider too short for the seat will tiptoe (only the balls of the feet touching the ground), which makes stopping unstable and increases the risk of dropping the bike during slow maneuvering. The Tank-format frame is taller than the mid-drive G300 SE Ultra (31.9 inches) and the motocross G300 Pro (31 inches), and meaningfully taller than the F18 2.0 (26.5 inches) and the G300 SE Mini (29 inches).

Practical recommendation: if your rider is 5'3" or shorter, choose the F18 2.0 (26.5-inch seat, fits 3'11" rider) or the G300 SE Mini (29-inch seat, fits 4'2" comfortably). If your rider is 5'4" to 6'5" and prefers the Tank-format upright posture, the G18 Pro is the right answer. If they prefer motocross format, the G300 SE Ultra is the same rider-height-tier alternative.

The G18 Pro Tank's 19-inch front wheel is the largest in the StreetRides HappyRun lineup and meaningfully larger than the F18 2.0's 17-inch, the G300 SE Ultra's 17-inch, and the G300 SE Mini's 14-inch. Larger front wheels absorb trail obstacles more smoothly by rolling over rocks, roots, and log-overs that smaller wheels deflect off. They deliver more stable steering at high speeds. And they maintain better trail-contact during braking.

Practical comparison: the 19-inch front matches the G300 Pro's tire size (motocross format), which means the G18 Pro Tank and the G300 Pro share the same trail-obstacle absorption capability. The G18 Pro Tank differs from the G300 Pro by the frame format (Tank upright vs motocross forward), the motor architecture (mid-drive vs hub motor), and the top speed (38 mph vs 50 mph).

Trade-offs: larger wheels are slightly less maneuverable at slow speeds and through tight singletrack than smaller wheels (the G300 SE Mini's 14-inch front turns more nimbly at low speeds). Larger wheels also weigh more, which slightly slows acceleration. For typical adult Tank-format use covering paved approaches and varied off-road terrain, the 19-inch front delivers meaningful ride-comfort advantages over smaller wheels.

Seventy-five miles is the manufacturer maximum range claim from the 60V 35Ah (2100Wh) battery, the largest battery in the StreetRides HappyRun lineup. That figure assumes a 170 lb or lighter rider in mixed pedal-and-throttle riding on dry trails at moderate speeds with warm temperatures.

Realistic range under aggressive off-road riding (frequent full-throttle acceleration, hill climbs, jumps, 200 lb adult rider with motocross gear) lands closer to 32 to 48 miles per session. Flat desert OHV parks near Phoenix and Las Vegas sit at the top of that band. Steep mountain trails near Denver and Salt Lake City sit at the bottom. The Tank-format and the 38 mph top speed (lower than the F18 2.0 and G300 Pro) help extend real-world range because lower-speed riding draws less current per mile than higher-speed riding.

Plan sessions around 32 to 42 miles for typical adult-rider off-road use, and budget 6 hours for a full charge between sessions (3 hours gets the battery to 40 to 80 percent for shorter recovery between rides). The 2100Wh battery is the largest in the StreetRides HappyRun lineup. The next-closest is the G300 SE Ultra at 1860Wh.

The current sale price is $1,119 from a $2,299 regular price (a $1,180 / 51 percent discount, the deepest discount in the StreetRides HappyRun lineup). At this discount level, you reasonably ask whether the product has been discontinued, has quality issues, or is being cleared for a replacement model.

What we have confirmed: the G18 Pro Tank is currently in stock and shipping with HappyRun's standard 2-year warranty and free continental-U.S. shipping. The HappyRun U.S. product page is live (verified 2026-06-24) and shows the bike as an active product with current spec sheet content. The sale appears to be a promotional discount rather than a clearance.

Practical recommendation: confirm with HappyRun customer support (in writing) the exact warranty term, the parts-availability roadmap (whether replacement batteries, brake pads, chain components, and frame parts are stocked for 3-plus years), and any restocking fee on a return before paying. The 51 percent discount is real value if the product is supported through its expected service life. Verify before paying.

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