This is the SRAM Blackbox GXP Ceramic Bearing Road Bottom Bracket, with an Italian style frame interface. The Blackbox GXP bottom bracket is a high performance, external bearing bottom bracket. The GXP system captures the left side bearing between the spindle and the left crankarm while allowing the drive-side bearing to float axially on the spindle, thereby eliminating the necessity to side-load bearings during adjustment. The simplicity of installation is refined: once it is tightened to the proper specifications you are ready to roll with a worry free BB. The GXP system uses two bicycle specific cartridge bearings and eight seals for a smooth and long lasting ride and SRAM’s gutter seal technology drastically improves sealing against the elements while reducing seal drag.
Giga X Pipe (GXP)- An external bearing system with 3D forged, heat treated and CNC'd 24mm OD chromoly spindle integrated with right crank arm; custom cartridge bearings with eight seals and CNC'd alloy cups.
Frame Interface: Italian
Spindle Interface: SRAM/TruVativ GXP
Bottom Bracket Shell ID: 36
Shell Width: 70mm
Drive Side Bearing ID: 24mm
Non-Drive Side Bearing ID: 22mm