The Critical Role of Rear Hub Spacing in Fat Tyre E-Bikes
The rear hub of a fat bike experiences massive rotational and lateral stresses. Choosing a high-precision sealed bearing rear hub with standard 175mm dropout spacing ensures silky-smooth freewheel engagement and robust motor integration.
Key Hub Specifications:
- 175mm Axle Width: Engineered specifically for 26x4.0 fat bike frames.
- 6-Bolt Disc Brake Rotor Mount: Standard 44mm BCD rotor interface for hydraulic or mechanical disc calipers.
- Threaded Freewheel Interface: Compatible with 7-speed and 8-speed Microshift freewheels.
_hfSxSIDc6C.avif?tr=w-1200%2Cq-75%2Cf-auto%2Cpr-true%2Cc-at_max)
![Accessible Electric Mobility: Voltebyk Adaptive Tricycle Kit Review [2026]](https://ik.imagekit.io/electriccycles/backup/Eco_Bike_Lit_Red_1_1800x1800%20(1)_hfSxSIDc6C.avif?tr=w-600%2Cq-60%2Cf-auto%2Cpr-true%2Cc-at_max)
![Voltebyk 10Ah Adaptive Electric Kit Review: Independence for Specially-Abled Riders [2026]](https://ik.imagekit.io/electriccycles/backup/Eco_Bike_Lit_Green_1_1800x1800%20(1)_mYqwKdLWn.avif?tr=w-600%2Cq-60%2Cf-auto%2Cpr-true%2Cc-at_max)