Wheels Manufacturing BSA Bottom Bracket - Shimano Hollowtech II Spindle ABEC 3 Purple Category-Valve parts CPSC Safety Standard for Bicycle

CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older Helmet Style BMX Maximum Head Circumference 65 Defined Color Black

Non slip surface shape

Shifts are fast and precise and the Orbit fluid damper keeps the chain in control whether the obstacle you’re hitting is a pothole or a root

35% improvement in rolling resistance vs previous generations

Wheels Manufacturing BSA Bottom Bracket - Shimano Hollowtech II Spindle ABEC 3 Purple Category-Valve parts CPSC Safety Standard for BicycleWheels Manufacturing BSA Bottom Brackets for frames that accept English (BSA) threaded bottom brackets Bottom Bracket Shell I. D. 1. 37 BB Frame Interface English BB Shell Width (mm) 73 Weight 105 Spindle Interface Type FSA MegaExo Defined Color Purple