Trek-specific bottom bracket with angular contact bearings for SRAM GXP crankset. When properly adjusted, angular contact bearings have 100% ball bearing engagement all the time. Compared to the OE-supplied radial bearings, they are stronger, faster, and will last longer. Other than the plastic center sleeve, which should already be installed in your frame's BB shell, these kits include all new bottom bracket parts. (As per the picture, the bearings, auxiliary seals for both sides, wave washer, and spindle spacers are included.

ENDURO ANGULAR CONTACT HIGH CARBON CHROMIUM STEEL CARTRIDGE BEARINGS GRADE 5 BALLS / ABEC 5 CARTRIDGE RATING

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