Shimano Alfine S501 Single Speed Chainring (Black) (130mm BCD) (Offset N/A) (45T) - Y1PB45010
Shimano Alfine S501 Single Speed Chainring (Black) (130mm BCD) (Offset N/A) (45T) - Y1PB45010, Shimano Alfine S501 1x Chainrings Specs: Tooth Count45 Ring Position/TypeSingle Drivetrain SpeedsSingle Speed 3/32" Chainring BCD130 ColorBlack Defined ColorBlack MaterialAluminum