TREK (BB90/BB95) GXP CHRO STEEL ANGULAR CONTACT BOTTOM BRACKET

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

See more details/specifications below.

THE BALLS are made from chromium steel. These high precision Grade 5 balls are 5/1,000,000” from exactly round in sphericity. For comparison, Shimano and Campagnolo use grade 25 balls in their top-level components. When talking ball grade, the smaller the number, the "rounder" the ball.
THE RACES ARE A PATENT-PENDING ANGULAR CONTACT DESIGN, vacuum de-gassed 52100 high carbon chromium alloy steel, hardened to Rockwell C-62.
THE RETAINERS are nylon with Graphite and are virtually frictionless.
THE SEALS are "LLB" low contact labyrinth type, with 2 sealing lips which fit into a matching groove on the inner race. The outer sealing lip repels dirt and water while the inner sealing lip retains the grease. When the bearing is first turned, you will notice some grease will come out of the seals. This fills the chamber between these 2 sealing lips, forming a “hydromatic seal.” Seal material is NBR rubber.
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Bottom Bracket Bearing Kits

Kits For SRAM GXP Crank Sets

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Bottom Bracket Bearing Kits

Kits For SRAM GXP Crank Sets

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