This KMC direct-mount chainring is engineered for Bosch Gen 3 e-bike motor systems. At 38 teeth with an 11/128" pitch and a chainline of 47.5/50mm, it is a precise fit for Gen 3 motor units. The black-anodised aluminium construction keeps weight down while providing the rigidity needed to handle e-bike motor torque reliably. If you're building or servicing a Bosch Gen 3 e-bike, this is the chainring to specify.

  • Compatible with Bosch Gen 3 e-bike motor systems
  • Direct mount interface
  • 38T, 11/128" pitch
  • Chainline: 47.5/50mm
  • Black anodised aluminium construction
  • KMC quality, made for high-torque e-bike use

KMC chains are covered against manufacturing defects. If a chain fails from a defect in materials or workmanship, return it to Tune Cycles with your proof of purchase and we'll manage the claim with KMC on your behalf — no need to contact the distributor yourself. This is in addition to your rights under Australian Consumer Law, which apply regardless of any manufacturer's warranty.

  • 38 teeth, 11/128" (narrow) profile
  • Direct mount for Bosch Gen 3 mid-drive motors
  • Steel, black finish
  • Chainline 47.5/50mm
Teeth38T
MotorBosch Gen 3
MountDirect mount
Profile11/128" (narrow)
Chainline47.5/50mm
SKU BPW-0475
Model # 0475
Barcode # 8719325812527
Brand KMC
Shipping Weight 0.3000kg
Shipping Width 0.160m
Shipping Height 0.060m
Shipping Length 0.220m