SRAM PressFit GXP BB86/92 Bottom Bracket a For fitting SRAM and Truvativ GXP cranksets to BB86 (86.5mm) press-fit, non-threaded bottom bracket shells (not for BB30, or BB90 systems) a Left and right bottom bracket bearing cup set for use on Giga X Pipe cranks with integrated, 24mm GXP spindle a BlackBox (hybrid-ceramic bearing) or Team (steel, sealed bearing) in press-fit design aluminum cups a Use of a shop-quality headset press recommended for installation