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HappyRun

HappyRun G300 SE Ultra Mid-Drive Electric Dirt Bike - Recreational Off-Road Use Only

SKU G300se-ult-black
$2,499.00
$1,599.00
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Authorized HappyRun Dealer

Manufacturer Warranty Included

  • ✓ Fast & Free Shipping
  • ✓ Flexible Financing Available
  • ✓ 30-Day Returns
  • ✓ 24/7 Support

Delivery: 5–10 Business Days
HappyRun G300 SE Ultra Mid-Drive Electric Dirt Bike - Recreational Off-Road Use Only

HappyRun

HappyRun G300 SE Ultra Mid-Drive Electric Dirt Bike - Recreational Off-Road Use Only

SKU G300se-ult-black

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Our U.S.-based team can help you choose the right gear, configure the perfect setup, or put together a custom quote for your project.

Call (877) 834-4299 Request a Quote

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Estimated Delivery
Free shipping on every U.S. order

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Estimated Shipping Time

We offer free shipping on all orders across the contiguous United States. Orders are typically processed within 1–3 business days, and standard delivery takes 5–10 business days. Freight and oversized items take 10–21 business days and may require a scheduled delivery.

What Is Your Return Policy?

We offer a 30-day return window on eligible items from the date of delivery. Products must be unused, in original condition, and returned in their original packaging. To start a return, contact us at support@adventuremotion.com or call (877) 834-4299. Return shipping costs may apply for non-defective items. Damaged or defective items are replaced at no cost to you.

Frequently Asked Questions

Do you offer financing?

Yes — we partner with Affirm so you can split your purchase into easy monthly payments with 0% APR options. Just select Affirm at checkout.

Are you an authorized dealer?

Yes. Adventure Motion is an authorized online dealer for all brands we carry. That means your manufacturer warranty is fully valid and protected.

Can you help me choose the right product?

Absolutely. Call us at (877) 834-4299 or email support@adventuremotion.com — our team specializes in outdoor gear and can match you to the right product.

What if my item arrives damaged?

Contact us within 48 hours of delivery at support@adventuremotion.com. We'll arrange a replacement at zero cost to you — no questions asked.

Need items in bulk? Contact us for a custom quote or invoice.
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The G300 SE Ultra runs a mid-drive motor rather than a hub motor, and that is the whole point of the bike. Mounting the motor in the center of the frame balances the weight and lets it work through the drivetrain, which multiplies torque to 240 N·m and makes steep climbs and slow technical sections far easier than a hub-drive bike of the same power.

Peak output is 6000W and top speed is 44 mph, with 56 to 65 miles of range from the 60V 31Ah pack. The battery sits in a reinforced housing inside the frame with a management system watching for overcharge, overheating and short circuits.

Hydraulic brakes on 190mm rotors, full suspension with a hydraulic fork, a 700-lumen headlight and an IPX5 water rating round it out. At a 31.9 in seat height it fits riders from 4'1" to 6'1", and the frame takes up to 350 lbs, which is why it gets pitched at both teens and adults.

⚠️ OFF-ROAD USE ONLY — NOT STREET LEGAL

This vehicle is designed exclusively for recreational off-road riding and is not street legal. It is intended for use on private property, dirt trails, motocross tracks, and designated off-road riding areas only. This product is NOT classified as a transportation vehicle and may not be operated on public roads, highways, sidewalks, bike lanes, or any public-access roadway. This product does not include a VIN, title, or registration and is sold strictly as recreational off-road sporting equipment. Always wear a DOT-approved helmet and appropriate protective gear. Off-road vehicle laws vary by state — riders are responsible for reviewing and complying with all applicable local regulations.

Motor & Battery

  • Motor: 6000W peak mid-drive
  • Peak Torque: 240 N·m
  • Battery: 60V 31Ah lithium (1860Wh)
  • Controller: 60V 35A
  • Charge Time: 6-8 hours

Performance

  • Top Speed: 44 mph
  • Range: 56-65 miles
  • Throttle: Full twist
  • Waterproof Rating: IPX5
  • Operating Temperature: 14°F to 104°F

Chassis

  • Suspension: Full suspension
  • Front Fork: Hydraulic
  • Rear: Spring shock
  • Brakes: Hydraulic, 190mm x 3.4mm rotors
  • Tires: Off-road, 17 in front / 14 in rear

Lighting & Display

  • Headlight: 700 lumen LED
  • Taillight: Integrated
  • Display: Digital

Size & Fit

  • Dimensions: 69.3 x 28.5 x 44.5 in (1760 x 725 x 1130 mm)
  • Wheelbase: 47.2 in
  • Seat Height: 31.9 in
  • Weight: 140 lbs (battery 21.8 lbs)
  • Max Payload: 350 lbs
  • Rider Height: 4'1" - 6'1"

  • Mid-drive motor for better balance and 240 N·m of torque
  • 6000W peak power, 44 mph top speed
  • 56-65 miles of range from a 60V 31Ah battery
  • Reinforced in-frame battery with full management system
  • Hydraulic brakes on oversized 190mm rotors
  • Full suspension with hydraulic fork
  • 700 lumen headlight and integrated taillight
  • Fits riders 4'1" to 6'1", 350 lb payload

Coverage runs from the date of delivery against defects in materials and workmanship: 24 months on the frame, 12 months on the front fork and handlebar, 12 months on the motor, controller, charger, wiring harness and battery, 6 months on the display, throttle and wheel components, and 3 months on tires, saddle, fenders, brakes, brake levers, lights, keys and switches.

The battery is engineered to hold up to 75% of its original capacity for up to 300 charge cycles.

The warranty does not cover normal wear and tear, damage from abuse, neglect, misuse or accidents, damage caused by stunt riding or jumping, water ingress, or any self-modification. To start a claim, contact Adventure Motion support with your order number and photos of the issue.

What does a mid-drive motor change?
It sits in the center of the frame instead of the wheel hub, which balances the bike and lets the motor work through the gearing. the result is 240 n·m of torque and much better climbing.
How fast is it and how far does it go?
Up to 44 mph, with 56 to 65 miles of range depending on rider weight, terrain and speed.
Is the battery safe for hard off-road use?
It sits in a reinforced casing inside the frame and uses a battery management system that guards against overcharging, overheating and short circuits.
Can i ride it in rain and mud?
It is rated ipx5, so rain, splashes and mud are fine. do not submerge it or aim a pressure washer at the electronics.
Who does it fit?
Riders from 4'1" to 6'1", with a 31.9 in seat height and a 350 lb payload.
How much assembly is there?
It ships about 85% assembled. front wheel, handlebars and footpegs are the main steps, and tools plus a video guide are included.
Is it street legal?
No. it is designed for off-road use on private property, trails and ohv areas. rules vary by state and city.

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