Tongsheng TSDZ2B 48V 500W — Upgraded Dual-Clutch Torque-Sensor Mid-Drive E-Bike Conversion Kit
Convert any standard commuter, road, gravel, or mountain bicycle with a 68–73 mm bottom bracket into a natural-feeling pedal-assist electric bike using the Tongsheng TSDZ2B 48V 500W mid-drive conversion kit. Featuring the upgraded TSDZ2B dual-clutch freewheel mechanism and bilateral torque sensor, it delivers smooth, responsive power directly through your bicycle drivetrain with minimal drag when pedaling unassisted.
- Brand & Model: Tongsheng TSDZ2B 48V 500W Mid-Drive Motor Kit (Upgraded Dual-Clutch Version)
- Rated Voltage & Output: 48V DC | 500W Brushless Geared Mid-Drive Motor (15A Integrated Controller)
- Max Torque & Speed: 80 N.m climbing torque | Up to 25 mph assisted speed
- Pedal Assist Technology: Integrated bilateral torque sensor + thumb throttle override
- Bottom Bracket Compatibility: Fits standard 68–73 mm (2.68–2.87 in) BSA threaded bottom brackets (33.5–36 mm inner diameter)
- Weather Resistance: IPX5 water-resistant sealed motor housing with waterproof quick-release 1T4 main harness
- Complete Kit Weight: 11.8 lbs (8.4 lbs motor unit + chainring, crank arms, display, and mounting hardware)
Includes the Tongsheng TSDZ2B 48V 500W mid-drive motor, 42T chainwheel with guard, left and right forged alloy crank arms, LCD display with remote keypad, thumb throttle, speed sensor with wheel magnet, 1T4 waterproof cable harness, and installation wrenches.
