BB Kit BB90/95 Shimano HollowTech II (Oversized) - ABEC 3

BK-5419 - ABEC-3 Oversized Bottom Bracket Bearing Kit for Shimano 24mm Cranksets & Trek BB90/95 Frames

Upgrade your bike's bottom bracket with the Enduro BK-5419 bearing kit, designed specifically for Shimano 24mm cranksets and Trek BB90/95 frames. This entry-level yet high-performance ABEC-3 radial bearing kit includes all necessary seals and spacers for a precise, professional installation. Although custom and less common, this kit effectively solves issues related to oversized bearing seats, especially in Trek BB90 bottom brackets where the shell material (carbon or aluminum) can become slightly enlarged over time. The bearings are made slightly oversized (0.1mm) to ensure a perfect fit. Engineered for durability, Enduro ABEC-3 bearings feature 52100 high-carbon chromium alloy races, grade 10 balls, LLB seals, and 90% fill waterproof grease. Deep groove design maximizes contact area and bearing lifespan. For easy installation and removal, we recommend the BRT-003 bearing removal tool, which allows quick, effortless bearing replacement while the bike is still assembled.