Wheels Manufacturing Inc. PF30 Outboard Zero Ceramic Bottom Bracket Medium reliable shifting action--from the larger

reliable shifting action--from the larger upper pulley offset to the 12-tooth X-Sync pulley wheels

Designed to be used with Eagle 12-speed chains

39 tooth chainring with guard Freewheel: Shimano 20T cog Brakes Promax cold forged

This means a lighter bike and consistent performance

Wheels Manufacturing Inc. PF30 Outboard Zero Ceramic Bottom Bracket Medium reliable shifting action--from the largerThe Wheels Mfg PF30 Outboard bottom bracket will give you all of the same benefits as their well loved Outboard style BBs. The two machined aluminum cups thread together ensuring the bottom bracket remains stable in the frame, increasing bearing life, and simplifying maintenance. This means no more creaking, smoother operation, longer bearing life, and really quick bearing replacement. Specifically designed for installing 24mm spindle diameter cranks