Heybike Mars 3.0 vs Funhang 26" Fat-Tire E-Bike: Specs Compared
Last updated: September 2026
Both are 4-inch fat-tire bikes with a 624Wh battery, but they are built for different jobs: one folds and has a powerful motor and full suspension, the other has bigger wheels, a rear rack and a stated 330 lb capacity. Here are the listing specifications side by side.
Side by side
Specifications as stated in each Amazon listing (checked 2026-09-29 to 2026-10-02). "Not stated" means the listing text we recorded does not give that figure. Range is our own estimate.
| Heybike Mars 3.0 Fat-Tire Folding E-Bike | Funhang 26" Fat-Tire E-Bike | |
|---|---|---|
| Type | Folding fat-tire bike | Non-folding fat-tire bike, rear rack |
| Wheels / tires | 20" x 4" | 26" x 4" |
| Motor (rated / peak) | Not stated / 1400 W | 500 W / 1000 W |
| Torque | 95 N·m | 66.6 N·m |
| Battery | 48V 13Ah (624 Wh) | 48V 13Ah (624 Wh) |
| Est. range (Wh / 12) | ~52 mi | ~52 mi |
| Top speed (listing) | 32 mph | 20 mph |
| Gears | 8-speed | 7-speed |
| Brakes | Hydraulic disc | Not stated |
| Suspension | Front + rear | Front fork |
| Maximum load | Not stated | 330 lb |
| Stated rider height | Not stated | 5'4" - 6'2" |
| Certification | UL 2849 | UL 2849 |
| Weight | Not stated | Not stated |
We have not tested either bike. The Mars 3.0 listing states a top speed of 32 mph, above the 28 mph limit of the highest e-bike class; see e-bike classes.
Where each one is stronger
Heybike Mars 3.0 Fat-Tire Folding E-Bike
- It folds, so it suits a car trunk, an RV or a small apartment.
- The stated torque (95 N·m) and peak power (1400 W) are higher, which helps on hills.
- Hydraulic disc brakes and full suspension.
- 8 gears.
Funhang 26" Fat-Tire E-Bike
- 26" wheels roll over bumps more smoothly than 20" wheels.
- A rear rack and a stated 330 lb maximum capacity.
- A stated rider-height range of 5'4" - 6'2".
- The listing states a 500 W rated motor, which tells you more about sustained power than a peak figure.
What to keep in mind
- Heybike Mars 3.0 Fat-Tire Folding E-Bike: it is a newer model; the listing states no weight, no maximum load and no rider-height range, and the 20" wheels are smaller than the 26" bike's. Confirm weight and load before you buy.
- Funhang 26" Fat-Tire E-Bike: the listing states no brake type and no weight, and it does not fold. It has a front suspension fork but no rear suspension.
- Both share a 624Wh battery, so their estimated range is the same (~52 miles of mixed pedal-assist riding); real range depends on weight, terrain and assist level. See battery range explained.
Which one should you pick?
- Choose the Mars 3.0 if you need to fold and store the bike, ride hills, or want hydraulic brakes and full suspension.
- Choose the Funhang if you want a rack, a bigger wheel and a stated 330 lb capacity, and you have room to store a non-folding bike.
- Check your size and load first: try the Fit Guide and our frame size guide.
These are editorial opinions based on listing specifications, not road tests.
Watch before you decide
Third-party video reviews on YouTube (not ours). Nothing loads until you press play.
Heybike Mars 3.0 Fat-Tire Folding E-Bike
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Related reading
This article is general information, not legal or professional advice. Laws, local rules and product specifications change, so always check the current rules where you ride and the details on the product page before you buy. Top EBike Rank does not test the bikes it features; see how we choose.