Wheels Manufacturing BSA Bottom Bracket - Shimano Hollowtech II Spindle ABEC 3 Purple Category-Valve parts 35% improvement in rolling resistance

35% improvement in rolling resistance vs previous generations

Non slip surface shape

Weight (lb) 7

' makes managing tubeless tires easier by allowing you to quickly check sealant levels without removing the tire or breaking the bead

Wheels Manufacturing BSA Bottom Bracket - Shimano Hollowtech II Spindle ABEC 3 Purple Category-Valve parts 35% improvement in rolling resistanceWheels 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