KMC Sprocket for Bosch Gen2 WIDE 21T E-Bike

Hardened chrome-molybdenum steel
For Bosch 2
Maximum performance that saves battery life
Direct assembly
Perfectly matched to KMC chains
Recommended chain: e101EPT

Item no.: BSFB5821
Size: 1/2" X 1/8" (single speed only)
Color: black

10,000 km+: Lasts. And lasts. And lasts. The 10,000 km+ drivetrain is the solution for frequent drivers. Pairing our e101 EPT/eCargo1 chain with one of our 3mm-wide sprockets and chainrings guarantees 10,000 km+.