GXP bottom brackets for SRAM and Truvativ GXP integrated spindle cranks

• Includes two spacers that are only needed for installing a MTB crankset on a 68mm bottom bracket shell; spacers are not needed for road cranks
• Giga X Pipe (GXP)- An external bearing system with 3D forged, heat treated and CNC’d 24mm OD CroMoly spindle integrated with right crank arm; custom cartridge bearings with eight seals and CNC’d alloy cups