FSA Ebike Steel Chainring Bosch G3/4 Brose Yamaha 104BCD 42t

This FSA steel chainring is designed for e-bikes running Bosch G3 or G4, Brose, or Yamaha mid-drive motors. The 42-tooth ring with 104mm bolt circle diameter (BCD) gives you a good balance between climbing power and efficient pedalling on flatter terrain. Steel construction means it's durable and forgiving, making it a solid choice if you're replacing a worn ring or upgrading your drivetrain.

E-bike motors put extra load through the chainring, so using a compatible replacement is important for smooth, reliable performance. This FSA ring is built to handle that demand. If your e-bike uses one