GREAT WORK R8 Motorcycle Style Electric Dirt Bike
- Maximum Weight Recommendation: 330 pounds
- Wheel Size: 20 inches
- Size: Large
- Lithium Battery Energy Content: 1200 Wh
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A solidly built, easy-to-assemble electric fat bike with real power, though heavier riders should expect noticeably less range and top speed than advertised.
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ASIN: B0GX9YM7BWModel: R8Category: Electric Bicycles
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Overview
The GREATWORK Peak R8 is a motorcycle-styled electric fat bike with full suspension, a 48V removable battery and a 7-speed drivetrain rated up to 37 mph. It suits riders who want moped-like power for commuting or off-road exploring rather than a lightweight bike built for pedaling.
Buyers who matched the headline claims were mostly light to moderate riders; one rider at 265 lb reported roughly 32 mph and 35 miles on throttle alone.
- 48V removable battery with lock
- 7-speed shifter, 5 riding modes
- 20x4 inch fat tires
- LED headlight, taillight and turn signals
Who it's for
Suits adults who want a heavy, stable commuter or trail bike with moped-style styling and are under about 200 lb to hit the advertised range and speed. Not a fit for buyers chasing ultralight portability or exact numbers from the listing, since results vary with rider weight.
Pros and cons
- Full suspension smooths rough roads
- Dual disc brakes rated for quick stops
- Arrives 90 percent pre-assembled
- Turn-signal lighting for night visibility
- Range and speed drop noticeably for heavier riders
- One buyer found the power weaker than a comparable bike they owned
- A wiring connector caused confusion for at least one buyer during setup
Where it stands among electric bicycles
- 1200 Wh lithium battery energy content: longer than 80% of the electric bicycles we list.
From the specs of the 502 electric bicycles we list; not a test result.
Specifications
| Brand | Great Work |
|---|---|
| Model | R8 |
| Dimensions & fit | |
| Maximum Weight Recommendation | 330 pounds |
| Wheel Size | 20 inches |
| Size | Large |
| Wheel Width | 4 inches |
| Item Weight | 81 pounds |
| Capacity & performance | |
| Number Of Speeds | 7 |
| Bicycle Gear Shifter Type | Thumb |
| Age Range Description | Adult |
| Power & efficiency | |
| Lithium Battery Energy Content | 1200 Whhigher than 80% of 221 electric bicycles |
| Wattage | 2000 wattshigher than 86% of 197 electric bicycles |
| Construction & materials | |
| Frame Material Type | Carbon Steel |
| Wheel Material | Aluminum |
| Color | Black |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Brake Style | Disc |
| Suspension Type | Dual |
| Bike Type | Commuting Bike |
| Derailleur Configuration | Rear |
| Specific Uses For Product | Dirt Biking, Gravel, Road, Snow, Trail |
| Style Name | Retro |
| Theme | Sport |
Closest rivals on specs
Frequently asked questions
How fast does the GREATWORK Peak R8 actually go?
GREATWORK lists a top assisted speed of 37 mph, but that figure assumes a lighter rider. One reviewer weighing 265 lb reported a real-world top throttle speed closer to 32 mph.
Does the Peak R8 arrive fully assembled?
No.
What braking system does the R8 use?
It uses front and rear dual disc brakes that GREATWORK rates for responsive stops within about 2 seconds.