Bafang H550 RM G063‑S Fat‑Tire Rear Hub Motor, 48V 750W/1000W Screw‑on Freewheel Hub Motor, 175mm /190mm Dropout for Snow Fat Ebike

Bafang H550 RM G063‑S Screw‑on Freewheel Fat‑Tire Rear Hub Motor

Bafang H550(RM G063‑S) screw‑on freewheel rear hub motor is high‑power hub motor for fat‑tire bikes, snow bikes and heavy‑duty fat‑bicycle builds. Except for adopting thread‑on screw‑in freewheel structure, all mechanical and electrical parameters are identical with cassette‑type H550 version. It supports 175mm and 190mm frame dropout. Perfect for 20‑inch and 26‑inch fat‑tire e‑bikes.

This screw‑on freewheel hub delivers peak torque up to 95Nm for snow, beach, mud and off‑road terrain. Rated power:750W /1000W, voltage 48V. IPX6 waterproof rating ensures stable performance in harsh wet and snowy conditions. It works with 6‑8 speed screw‑on freewheel, disc‑brake compatible.

Compatibility

✅ Frame dropout: 175mm /190mm available

✅ Wheel size:20″, 26″ Fat tire

✅ Voltage:48V DC

✅ Brake: Disc‑brake only

✅ Freewheel Type: Screw‑on / Thread‑on freewheel, compatible with 6‑8 speed screw‑in freewheel

✅ Spoke spec:36H*12G

✅ Throttle: Optional

Specifications

Key Features

✅ Screw‑on Thread‑in Freewheel Design: Adopt thread‑mount screw‑on freewheel interface, compatible with common 6‑8‑speed screw‑in freewheel; convenient for low‑cost fat‑bike conversion project.

✅ Two Dropout Options:175mm &190mm dropout versions to match most snow / fat‑bike rear frame forks.

⚠️ Confirm rear fork OLD dimension before placing order.

✅ High‑Torque Off‑Road Performance: Max 95Nm torque, great power output for snow, sand, muddy road, climbing and heavy‑load riding.

✅ IPX6 Waterproof Grade: Good dust‑proof and splash‑proof performance, reliable for outdoor snowy and wet‑weather application.

✅ Robust Mechanical Build: 4.9kg solid hub motor housing, 36H*12G reinforced spoke holes for heavy‑load fat‑tire application.

✅ Certified Safety Standard: CE & UL2849 certification for North America and European ebike market.

Important Notes

⚠️ This is screw‑on thread‑in freewheel version, NOT cassette‑type. Only fit for 6‑8‑speed screw‑on freewheel. Please distinguish from cassette‑type H550 motor.

⚠️ Please double‑check your frame rear dropout width (175mm or190mm) before purchase. Only disc‑brake compatible. Battery, controller, display, spokes, rim and screw‑on freewheel are sold separately. Please comply with local ebike power‑limit and traffic‑regulations.