Kogel Hybrid bearings use premium grade Silicon Nitride (Si3n4) Bearings and premium hardened steel bearing races which are mirror polished to perfection. The result? A long lasting, smooth bearing which provides less resistance and is less prone to failures. These bearings are rated to the Grade 3 / ABEC 5 level - built to spin with minimal friction. Road Seals (Blue).
. Fitment: Trek 37mm Direct Fit
. Shell Width: 90.5mm
. Spindle: 24mm
. Compatibility: Shimano Hollowtech II, SRAM GXP, any most 24mm spindle systems
. System includes GXP Reducer
. Road Seals (Blue