Shimano Deore XT BB-MT800-P

This model is designed for frames with a press-fit shell width of 89.5mm or 92mm and an internal diameter of 41mm. Please verify your frame's specific bottom bracket shell standard before purchasing, as it is not compatible with threaded shells.

The BB-MT800-P is specifically engineered for Shimano Hollowtech II cranksets, which feature a 24mm spindle. It will not work with cranksets that use different spindle diameters, such as SRAM DUB or 30mm systems.

Press-fit bottom brackets like this one allow for wider frame shell designs, which can increase stiffness and power transfer efficiency. They are standard on many modern mountain bike frames to accommodate larger bearings and lighter frame construction.

This unit features high-quality sealed bearings designed to keep dirt, water, and grit out of the internal mechanism. While it is built for durability in rugged conditions, regular maintenance and cleaning of your drivetrain will help extend the life of the seals.

Yes, because this is a press-fit system, you will need a dedicated bearing press tool to install it correctly without damaging the frame or the bearings. We recommend having a professional mechanic handle the installation if you do not have the proper press equipment.