Wheels Manufacturing BSA 30 Bottom Bracket - English BSA Frame Interface ABEC-3 Bearings For 30mm Spindle Red ModelNumber=H3891 Compatible with Shimano Hyperglide+ 12-speed

Compatible with Shimano Hyperglide+ 12-speed chains and 12-speed drivetrains

Burly outer knobs provide support to keep them digging while slapping berms or spraying loam

Featuring new Super Gravity technology to make it lighter it is still extremely sidewall-stable and snake-bite resistant

2-plunger pumping system provides high pumping efficiency in an extremely compact size

Patented Aither Technology

Wheels Manufacturing BSA 30 Bottom Bracket - English BSA Frame Interface ABEC-3 Bearings For 30mm Spindle Red ModelNumber=H3891 Compatible with Shimano Hyperglide+ 12-speedExternal 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