Bafang S2-5 104BCD Chainring Adapter, Aluminum Alloy Crank Spider for M420 M500 M510 M560 M600 M620 M630 M800 M820 Mid Motor

Bafang S2-5 104BCD Chainring Adapter / Crank Spider

This is a high-strength aluminum alloy S2-5 chainring adapter, also known as a 4-arm crank spider, designed for Bafang mid-drive motor systems. It provides a reliable interface for mounting 104BCD chainrings on compatible Bafang mid motors.

With a 52mm chainline and lightweight 60g construction, it helps optimize drivetrain alignment while keeping overall weight low. The S2-5 model is widely used in e-MTB, fat bike and electric bicycle conversion projects where a standard 104BCD chainring is required.

Compatibility

✅ Bafang M420 mid motor

✅ Bafang M500 mid motor

✅ Bafang M510 mid motor

✅ Bafang M560 mid motor

✅ Bafang M600 mid motor

✅ Bafang M620 mid motor

✅ Bafang M630 mid motor

✅ Bafang M800 mid motor

✅ Bafang M820 mid motor

✅ 104BCD standard chainrings

Specifications

Key Features

✅ 104BCD Standard Interface: Designed for standard 104BCD chainrings, widely compatible with aftermarket ebike chainring options.

✅ Lightweight 60g Design: Minimal weight gain while maintaining strong and rigid power transfer.

✅ Optimized 52mm Chainline: Helps improve chain alignment and reduce friction during pedaling.

✅ High-Strength Aluminum Alloy: Rigid and durable for heavy-duty ebike use.

✅ Wide Bafang Mid-Motor Compatibility: Fits multiple Bafang mid motor models for flexible upgrade and conversion projects.

Package Includes

1 × Bafang S2-5 104BCD Chainring Adapter / Crank Spider

Important Notes

• This is a chainring adapter / crank spider only; chainring, bolts, crank arms and motor are not included.
• Please confirm your Bafang mid motor model and chainring BCD compatibility before ordering.
• Minor color deviation may occur due to lighting and screen display.
• Professional installation recommended for best drivetrain alignment.