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Outdoors · happyrunbike
Fat tires built for trails, not just the driveway
HappyRun G100 Pro Fat Tire Electric Bike
A fat-tire electric bike for riders who want range and grip on rough ground.
Deal score 6.9 · Great deal
$1,999.00$3,299.00 happyrunbike's regular price
You save $1,300.00 at happyrunbike
Checking it's still available…
Why it's a great deal
- happyrunbike lists its regular price at $3,299.00: 39% off by its own figures
- Rated 4.8 out of 5 by 77 buyers
Every store we checked
- happyrunbikeNew
In stock
$1,999.00Observed at 12:15 PM
From happyrunbike
- Smart NFC tap-to-start ignition with full-color LED dashboard and built-in sunshade
- Dual-stage full suspension absorbs bumps for comfort, control and stability at high speeds
- 20" x 4.0" puncture-resistant all-terrain fat tires for streets, gravel, sand and dirt trails
- 6000W peak motor with strong torque and speeds up to 50 MPH
- Removable 72V 33Ah dual battery system with up to 78 miles of range
- 203mm hydraulic disc brakes with large rotors for strong stopping power
- Sizes
- Black, Yellow, Black + Helmet (XL), Yellow + Helmet (XL), Black + Cargo Box, Yellow + Cargo Box
- Materials
- High-strength carbon steel frame; upgraded adjustable aluminum alloy front fork
- Fit
- Recommended height 5'3" - 6'5" (160-196 cm)
- Sizing
- Default helmet size is L (58–59 cm), fitting most adult and teenage riders; leave an order note or contact support for M or XL. Bike accommodates riders from 5'
- Care
- Charge time 7-8 hours; both batteries are fully removable and can be charged on the bike or taken indoors to charge separately
- Guarantee
- Industry-leading 3-year warranty on frames, plus official coverage for all key motors and electrical components.
- Returns
- 14-day returns; if not completely satisfied you can return it, but a restocking fee will be charged.
- Shipping
- Free shipping throughout the continental US, excluding Alaska, Hawaii, Puerto Rico and other US territories; most orders arrive in 3-5 business days (7+ days fo
- Packs
- Color options bundled with an XL helmet or a cargo box; add-on deals include mirrors, replacement battery, helmets and a waterproof ebike cover.
- In the box
- Battery, Charger, Battery keys, Pedals
Specs
- Recommended Height
- 5'3" - 6'5" (160-196 cm)
- A - Total Length
- 68" (1727 mm)
- B - Handlebar Heigh
- 47" (1194 mm)
- C - Wheelbase
- 45" (1143 mm)
- D - Seat Height
- 33" (838 mm)
- Tires
- Premium 20*4 Tires
Ask our shopping agent
About the HappyRun G100 Pro Fat Tire Electric Bike
The HappyRun G100 Pro is a fat-tire electric bike built around 20x4-inch knobby tires, sized for riders from 5'3" to 6'5". The fat tires and long 68-inch frame point to a bike made for rough pavement, gravel and light trail use rather than city commuting. It is sold at one store, priced at $1,999 at happyrunbike as of November 4, 2026, with no competing new listings to compare against.
Best forRiders 5'3" to 6'5" who want one bike for mixed terrainGravel, dirt road and light trail ridingBuyers who prefer wide, stable fat tires over narrow city tiresTaller riders needing a long frame and high seat
Pros
- 20x4 fat tires add grip and cushioning on loose or uneven ground
- Wide height range covers riders from 5'3" to 6'5"
- Long 68-inch frame and 45-inch wheelbase give a stable ride
- Rated 4.8 out of 5 from 77 ratings
Cons
