The Shimano BB MT800 XT Press Fit Bottom Bracket outboard bearings offer better weight distribution and more stability for a more efficient power transfer. The diameter of the bearing axle was an important factor in development because the axle has a positive effect on stiffness, stability, weight, and rotating efficiency. Key Features: - It has small ball bearings for better rotation- It fits PF30 92mm BB shells- It has a Shimano Hollowtech II spindle interface- It weighs 68.2g- It is compatible with: XT FC-M8000, XT FC-T8000, SLX FC-M7000, FC-MT700, FC-MT600

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