KMC Bosch Gen 2 Super Narrow Sprocket, 21T

KMC Sprocket for Bosch Gen2 Super Narrow 21T E-Bike

Hardened chrome-molybdenum steel
For Bosch 2
Maximum performance that saves battery life
Direct assembly
Perfectly matched to KMC chains
e1 / e8 / e9 / e10 / e11 / e12

Item no.: BSFB5021
Size: 1/2 X 11/128
Color: Black

3500km+:

It lasts. And it lasts.

The 3500 HP+ drivetrain is the perfect solution for demanding drivers. The combination of our e1 EPT chain and narrow sprockets ensures a guaranteed mileage of 3500 kilometers and more.