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Tongsheng TSDZ2 TSDZ2B reduction gear shaft kit for 36V/48V ebike mid-drive motor. Multiple versions: Metal, Nylon, PEEK & White Gear. High wear resistance, perfect direct-fit replacement repair spare parts.
This Tongsheng TSDZ2 & TSDZ2B reduction gear shaft kit is a professional replacement spare part specially engineered for Tongsheng mid-drive electric bicycle motors. It is the core transmission component for 36V and 48V TSDZ2 / TSDZ2B mid motors, used to replace worn, stripped or broken original gear assemblies during motor maintenance and rebuild.
✅ Tongsheng TSDZ2 Mid-Drive Ebike Motor (36V / 48V)
✅ Tongsheng TSDZ2B Mid-Drive Ebike Motor (36V / 48V)
Key difference between TSDZ2 and TSDZ2B: TSDZ2 adopts detachable reduction shaft (nylon gear + shaft + one-way needle bearing). TSDZ2B uses integrated one-piece nylon gear shaft assembly without one-way needle bearing. TSDZ2B integrated structure withstands higher torque, paired with external bidirectional freewheeling clutch to reduce motor drag resistance when power off.
✅ Multi-Material Gear Options Choose metal, nylon or PEEK gears for different riding scenarios. PEEK & nylon gears deliver low noise operation; metal gears provide ultra-high load capacity and outstanding wear resistance.
✅ Precision Machined Assembly CNC machined metal shaft paired with high-performance polymer gears. Perfect tooth profile engagement, stable power transmission, reduce gear skipping, abnormal noise and tooth wear issues.
✅ Direct Fit OEM Replacement Designed to match original factory specs. No modification required for qualified installation. Ideal for motor repair shops, DIY ebike builders and wholesale distributors.
✅ Excellent Durability High strength nylon and PEEK materials feature low friction, heat resistance and long service life. Metal gear variant handles heavy torque and high-load off-road riding.
✅ Solve Common Motor Faults Fix symptoms like gear grinding noise, stripped gear teeth, power dropout, jamming and transmission failure on TSDZ2 / TSDZ2B mid drive motors.
Product Name: TSDZ2 TSDZ2B Reduction Gear Shaft Assembly
Applicable Motor: Tongsheng TSDZ2 / TSDZ2B
Mid-Drive E-bike Motor
Working Voltage: 36V / 48V
Gear Material Options: Metal, Nylon, PEEK
Type Application: Mid motor repair, rebuild & replacement
1 × Reduction Gear Shaft Assembly (Selected version as ordered)
We specialize in mid-drive motors and e-bike parts. Strict testing, powerful R&D and flexible OEM service guarantee long-term cooperation.
It used to take me weeks to hunt down hard‑to‑find e‑bike spare parts. Their compatibility‑check technical support saved me countless repair headaches. Reliable supplier I can always count on.
For more FAQs and further details, please get in touch with us
We supply genuine OEM parts and premium compatible aftermarket replacement parts for e-bikes, including motor components, controllers, throttles, PAS sensors, wiring harnesses, connectors and Bosch form-factor batteries.
We serve mainstream drive system manufacturers: Ananda, Bafang, Aikema, Tongsheng, Shengyi, Bosch and more. We also provide repair components for complete e-bike brands including Sur‑Ron, Aventon, Trek and many others.
All items are brand-new and inspected before shipment. We do not supply second-hand or refurbished goods.
Our team verifies compatibility according to your bike model, motor info or original part photos. We confirm available OEM parts or recommend workable alternative solutions.
Yes. Flexible order sizes are supported, ranging from single spare parts to bulk purchases.
Sea freight, air freight and rail transport are optional.
Lead time varies by item and shipping mode. We confirm exact timelines before each order and share tracking updates.
We provide part identification, model matching and full order follow-up support.
