Wheels Manufacturing BSA 30 Bottom Bracket - English BSA Frame Interface ABEC-3 Bearings For 30mm Spindle Orange Model=Premium ZS Upper Headset Designed to be used with

Designed to be used with sealant – preferably without ammonia

Lightweight and responsive this UCI-certified sprinter has proven itself on the boards of velodromes across the globe

Cold forged CNC machined 7050 aluminum chainrings

Compatible with the Wahoo ELEMNT BOLT 2

Wheels Manufacturing BSA 30 Bottom Bracket - English BSA Frame Interface ABEC-3 Bearings For 30mm Spindle Orange Model=Premium ZS Upper Headset Designed to be used withExternal BSA, English threaded bottom brackets featuring anodized aluminum cups with Enduro sealed bearings Mountain versions for 73mm or 68mm bottom bracket shells or Road specific versions for 68mm bottom bracket shells Offered in 24mm (Shimano, FSA, Race Face, etc), GXP 24 22mm (SRAM Truvativ), 30mm interface, SRAM DUB and Praxis M30 28 Compatible with 30mm diameter cranks with a spindle length of at least 104mm Angular contact: Enduro ABEC 5