- No. 43, Yushan Road, Huqiu District, Suzhou City, Jiangsu Province, China
- +8613671928471
- dafuli01@ebikeserviceparts.com
130BCD 40T steel chainring custom for Bafang MidDrive systems. +/- tooth design prevents chain drop, high-strength steel resists wear & deformation. 171mm diameter, only 166.5g, ideal e-bike upgrade & replacement chain ring.
✅ Works with 130BCD crankset
Note: Confirm your crank BCD specification before purchase. This chainring is 130BCD, please double check to avoid mismatching.
Precision machined to suit Bafang MidDrive motor systems, enabling accurate, secure installation. Optimized tooth profile ensures stable meshing with bicycle chain and consistent power output during cycling.
Made of premium solid steel material. Great wear resistance and anti-deformation performance. Capable of enduring high torque loads and rough riding conditions, delivering long service life for frequent heavy use.
Optimized 40-tooth specification balances gear ratio for efficient pedaling and smooth acceleration. The plus-minus tooth pattern enhances chain retention and effectively stops chain derailment on bumpy, off-road terrain.
Standard 130BCD mounting hole layout, compatible with many mid-drive cranksets. Simple to swap for old chainrings, a versatile upgrade choice for multiple e-bike builds.
Dimension: 171mm outer diameter, thickness 3.15mm. Net weight only 166.5g. It adds minimal extra weight to your bike while maintaining structural rigidity.
Material: Steel
Color: Black
BCD: 130BCD
Teeth: 40T (+/- tooth pattern)
Diameter: 171mm
Thickness: 3.15mm
Net Weight: 166.5g
Slight manual measurement tolerance exists for dimension and weight data.
Only the chainring is included; crank, chain, motor and other accessories shown in reference pictures are not in the 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.
