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Team Cycles£18.99Visit shop Shimano Unisex Black Bottom Bracket Mtb Press Fit 92 89.5Mm
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This Shimano XT BB-MT800 Bottom Bracket is designed for mountain bikers seeking a durable and low-maintenance press-fit solution. Its key benefit is the noise-reducing, reinforced polymer cups that protect your frame. A potential caveat is its specific compatibility with 89.5mm and 92mm shell widths, requiring careful frame measurement. The BB-MT800 features a HollowTech II interface, sealed bearings for all-weather performance, and comes with necessary spacers and seals for installation.
| Material | Polyester |
|---|---|
| Model Part Number | BB-MT800 |
| Brand | SHIMANO |
It fits press-fit frames with either an 89.5mm shell (using the included 2.5mm spacer) or a 92mm shell.
No, it is specifically designed for Shimano HollowTech II MTB cranksets. It is not compatible with road cranks or other crank standards.
Yes, a press-fit bottom bracket installation tool is required to properly seat the cups into the frame.
The sealed bearings are maintenance-free. Simply keep the exterior clean and avoid direct high-pressure washing of the seals. If performance degrades, replacement is recommended.
The fibre-reinforced polymer cups help to reduce frame noise and prevent potential damage to the frame by minimizing direct metal contact and absorbing vibrations.
No, this is a press-fit bottom bracket and requires a compatible press-fit shell in the frame. It is not designed for threaded bottom brackets.
The set includes the left and right cups, one 2.5mm spacer, an inner cover, and inner O-rings.
Ensure the frame shell is clean and that the cups are properly pressed in. Check that all included spacers and seals are correctly installed. The polymer cups are designed to reduce noise, but frame alignment issues can still cause sounds.
The sealed bearings may have been damaged during installation or by external factors. Inspect for damage or contamination. If the issue persists, the bottom bracket may need replacement.
Verify that the correct HollowTech II crankset is being used and that the bottom bracket is fully seated in the frame. Ensure the crank spindle is aligned correctly with the bottom bracket bearings.
Double-check your frame's bottom bracket shell width. This BB-MT800 is specifically for 89.5mm or 92mm press-fit shells. Ensure you are not trying to install it on a standard threaded or wider fat bike shell.
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