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8‑slot steel genuine original chainring lock nut for Bafang M500, M510, M560, M600, M820 mid‑drive e‑bike motors. Factory OEM spare hardware for eMTB chain wheel installation & motor repair.
✅ Bafang M510 (MM G522) Mid‑Drive Motor
✅ Bafang M560 Mid‑Drive Motor
✅ Bafang M600 (MM G521) Mid‑Drive Motor
✅ Bafang M820 Mid‑Drive Motor
Note: Not compatible with BBS series, M620 motor, please double‑check motor model before purchase.
| Parameter | Value |
|---|---|
| Structure | 8‑Slot / 8‑Notch Chainring Lock Nut |
| Material | High‑Strength Carbon Steel |
| Surface Finish | Anti‑rust Black Oxide Coating |
| Net Weight | 32g / pc |
| Application | Chain wheel retaining for M‑series mid‑drive motor |
✅ 8‑Slot Professional Notch: Standard 8‑slot design works with special lock nut spanner for easy assemble & disassembly for bike repair shops.
✅ High‑Strength Steel Material: Original factory carbon‑steel construction withstands high torque load from eMTB climbing & trail riding, resisting deformation.
✅ Anti‑Loosening Factory Performance: Securely holds the chainring, effectively avoids nut spinning‑off caused by vibration during off‑road cycling.
✅ Original Anti‑Rust Surface Treatment: Black oxide finish provides corrosion resistance for long‑term service under wet and muddy riding environments.
Product Name: Genuine Chainring Lock Nut for Bafang M‑Series Mid‑Drive Motor
Material: High‑strength Carbon Steel
Structure: 8‑Slot Retaining Nut
Net Weight: 32g per piece
Compatible Motors: Bafang M500, M510, M560, M600, M820 Mid‑Drive E‑bike Motors
Color: Black
Package: 1 × Genuine Bafang Chainring Lock Nut
Proper dedicated 8‑slot lock nut spanner is required for installation. Please follow Bafang official torque specification during mounting.
Minor color differences may appear due to lighting conditions and screen display variations.
Only chainring lock nut is included; other tools or motor parts shown on reference images are not contained in package.
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.
