- No. 43, Yushan Road, Huqiu District, Suzhou City, Jiangsu Province, China
- +8613671928471
- dafuli01@ebikeserviceparts.com
ISIS 165mm forged aluminum crank arm set, total pair weight 508g. Direct replacement cranks for Bafang M620 M820 and Ananda M230 M7600 M7200 M5000 mid‑drive ebike motors. High‑strength ISIS‑spline spare part for e‑bike retrofit & repair.
This professional ISIS‑spline forged aluminum crank arm set is a dedicated replacement spare part engineered for Bafang and Ananda mid‑drive ebike motors. Built from high‑strength forged‑alloy material with precise ISIS spline interface, it perfectly matches original motor specs to deliver stable torque transmission and reliable pedaling performance.
✅ Bafang Mid‑Drive Motors: M620, M820
✅ Ananda Mid‑Drive Motors: M230, M7600, M7200, M5000
Note: Only fits motors with ISIS 10‑spline interface, not for Shimano Octalink (8‑tooth spline) or JIS square spindle.
| Parameter | Value |
|---|---|
| Crank Length | 165mm |
| Interface Standard | ISIS Spline |
| Material | Forged Aluminum Alloy |
| Weight (Pair) | 508g |
1 pair × ISIS 165mm Forged Crank Arms (Left Crank + Right Crank)
✅ Precision ISIS‑Spline Dimensions: Strictly manufactured to OEM spline specs, ensures tight connection, prevents crank slipping under high‑torque pedaling.
✅ Forged Aluminum Alloy Construction: Forged process brings superior rigidity and impact resistance compared with cast cranks, anti‑deformation for heavy‑load and hill‑climbing riding.
✅ 165mm Optimized Crank Length: Universal 165 mm length fits most mountain ebikes and city ebikes, delivers comfortable pedaling geometry for majority riders.
✅ Direct Drop‑in Replacement Spare Part: Ideal for replacing bent, worn or damaged original cranks during motor maintenance.
✅ Lightweight & Compact: Total pair weight only 508g, no excessive extra weight added to your e‑bike system.
Please verify your motor uses ISIS spline interface before placing your order to prevent incompatibility. Not compatible with square taper or Octalink motors.
Minor color differences may appear due to lighting conditions and screen display variations.
Allow mechanical measurement tolerance.
Only crank arms are included; pedals, chainring and mounting bolts shown in reference images are not part of the package.
Perfect spare parts for e‑bike repair stores, DIY motor rebuilders and ebike wholesale distributors. Cost‑effective crank replacement to restore original pedaling performance for compatible mid‑drive ebikes.
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.
