The SRAM GXP Team Bottom Bracket features Gutter Seal Technology to reduce friction and weight for smooth-spinning performance. Brand specific, this bottom bracket can only be installed with SRAM and Truvativ cranksets, due to its left side bearing, which uses a smaller diameter to fit with the stepped spindle of SRAM's cranks. Note that this bottom bracket is compatible with all SRAM road and Truvativ mountain cranksets, and it comes with English threading only. It fits 68 and 73mm bottom bracket shells, with included spacers for fitment with 73mm bottom bracket shells.