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- dafuli01@ebikeserviceparts.com
Premium nylon gear assembly with bearing for BAFANG M400 & G330 250W/350W torque mid-drive motors. 65mm helical gear with metal pinion, high wear-resistant, eco-friendly, direct replacement spare part for e-bike motor repair.
This professional nylon gear assembly is a dedicated replacement spare part engineered for BAFANG M400 and G330 series 250W / 350W torque mid-drive motors. It comes pre-assembled with helical nylon gear, metal pinion shaft and bearing, perfectly matching the original motor structure for seamless installation and stable power transmission.
✅ BAFANG M400 torque mid-drive motor ✅ BAFANG G330 250W torque motor ✅ BAFANG G330 350W torque motor
✅ Perfect Fit for BAFANG Mid-drive Motors: Precisely manufactured to original specs with 65mm dimension, enables seamless integration into your e-bike drivetrain system and guarantees optimal performance.
✅ Durable Nylon Helical Gear: Made of premium nylon material with outstanding wear resistance, helical tooth design ensures smooth and quiet power transmission under continuous pedaling loads and complex riding environments.
✅ Pre-assembled with Bearing & Metal Pinion: Complete gear assembly ready for direct replacement, saves installation time and ensures reliable operation.
✅ Safe & Eco-friendly: Free from high-concern chemicals, compliant with environmental requirements for safer use and disposal.
✅ Compact & Lightweight: Package size 10 × 10 × 10 cm, weight 0.500 kg, easy for storage, transportation and on-site maintenance.
| Item | Details |
|---|---|
| Product Name | E-bike Motor Nylon Gear Assembly |
| Applicable Motors | BAFANG M400, G330 250W, 350W Torque Mid-drive Motors |
| Overall Dimension | 65mm × 45.5mm × 18mm |
| Gear Type | Helical nylon gear with metal pinion & bearing |
| Package | 1 piece per pack |
| Package Size | 10 × 10 × 10 cm |
| Weight | 0.500 kg |
| Origin | Mainland China |
Great spare replacement part for e-bike repair shops, DIY ebike rebuilders and distributors. Replace worn gears to restore normal power output and smooth riding performance of your Bafang torque mid-drive motor.
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.
