C-Bear BB30 to 24mm Ceramic Truvativ/GXP Bottom Bracket

C-Bear BB30 to 24mm Ceramic Truvativ/GXP Bottom Bracket The C-Bear BB30 to 24mm Ceramic Truvativ/GXP Bottom Bracket is made for performance-focused riders. Using the very best in ceramic ball bearings; this bottom bracket delivers the lowest possible levels of friction and improves your efficiency on the road. Compatible with bottom brackets with an internal shell diameter of 42mm and with a width of 68mm; this bottom bracket is compatible with Truvativ or GXP cranks that use a 24mm crank spindle diameter.