The BB90/95 Bearing Kit - ABEC3 OS - GXP from Enduro Bearings is a high-quality bottom bracket bearing kit designed for SRAM GXP cranksets and Trek BB90/95 framesets. This kit includes ABEC-3 radial bearings, seals, and spacers for a precise and professional installation.Enduro Bearings' ABEC-3 bearings are made specifically for bicycles, featuring 52100 High-Carbon Chromium alloy races and grade 10 Balls. These bearings are engineered with deep grooves to accommodate the largest balls possible, providing maximum bearing contact area and greatly increasing bearing life. The LLB seals and high-pressure, waterproof grease ensure lasting durability and performance.Trek BB90 bottom brackets require the bearing to be directly pressed into the BB shell, which is usually made of materials that are softer than steel. Over time, the bearing seat can become slightly oversized. The custom replacement bearings in this kit have been made just slightly oversized to compensate for any slop that may have developed in the BB shell.For easy removal and installation of this bearing kit, we recommend using the BRT-003 24mm x 37mm bearing tool (EB9040). This tool allows you to quickly remove and install bearings with a few twists of the wrist, even with the BB still in the bike.The BB90/95 Bearing Kit - ABEC3 OS - GXP is compatible with BB90/95 shell sizes and has an axle size of SRAM GXP (22/24mm). It comes with a 1-year warranty against manufacturing defects. Enduro Reference Number: BK-5417.