Offset 104BCD E‑bike Chainring, Single Chain Ring for Bafang BBS01 (M215 MM G340.250/350.C) BBS02 (M315 MM G340.500/750.C) G340 Mid‑Drive Motor, 32T 34T 36T 38T 40T

Offset 104BCD Single E‑bike Chainring for Bafang BBS01 BBS02 G340 Mid‑Drive Motor

This 104BCD offset single chainring is precision engineered for Bafang BBS01, BBS02 and G340 mid‑drive motors. Adopting offset non‑flat structure and inner installation design, it effectively avoids chain falling off during riding. Available in multiple tooth sizes to match different riding scenarios, ideal replacement and upgrade part for e‑bike conversion, DIY rebuild and maintenance projects.

Compatibility

✅ Perfect fit for Bafang mid drive motors:

• BBS01（M215, Equivalent Model: MM G340.250.C / MM G340.350.C）
• BBS02（M315, Equivalent Model: MM G340.500.C / MM G340.750.C）
• G340 series mid‑drive motor family

✅ 104BCD mounting standard, direct bolt‑on installation

✅ Suitable for e‑bike retrofit, upgrade and chainring replacement projects

Precise Parameters

Package Includes

1 × Offset 104BCD Chainring (Mounting bolts included)

Only the above package content, other products are not included.

Key Features

✅ Offset Non‑flat Structure: Not flat plate design with offset profile, the disc installs inward, greatly reduces the risk of chain slipping and dropping during bumpy riding.

✅ Precision Machined for Perfect Fit: Custom designed for Bafang BBS01(M215), BBS02(M315), G340 mid‑drive motors, matches original mounting hole position for direct bolt‑on installation.

✅ Multiple Tooth Selection: Available in 32T,34T,36T,38T,40T. Low teeth for climbing & high torque; large teeth for higher speed riding to meet your different riding demands.

✅ Durable Construction: Made of high‑strength alloy material, wear‑resistant tooth profile, stable power transmission, long service life under continuous torque.

✅ Easy Installation: Direct replacement for original chainring, simple assembly for e‑bike repair shops and DIY e‑bike builders.

Specifications

• Product Name: Offset 104BCD Single E‑bike Chainring
• BCD:104mm
• Tooth Count: 32T / 34T / 36T / 38T / 40T
• Structure: Offset non‑flat, inner mount anti‑chain‑drop design
• Compatible Motors: Bafang BBS01(M215 MM G340.250/350.C), BBS02(M315 MM G340.500/750.C), G340 Mid‑Drive Motors
• Color: Black
• Package:1 × Offset 104BCD Chainring with mounting bolts

Important Notes

Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. Please confirm your Bafang motor model(M215=MM G340.250/350.C; M315=MM G340.500/750.C) and required chainring tooth number before purchasing. Chainring spider, motor, crank arm and other e‑bike components shown on reference images are NOT included. This chainring is specially for BBS01 BBS02 G340 mid motor system, not compatible with other Bafang motor series.

Ideal spare part for e‑bike repair stores, DIY retrofit enthusiasts and ebike wholesale distributors. Reliable anti‑drop chainring upgrade solution for Bafang BBS01 / BBS02 / G340 mid drive e‑bikes.