Shimano XT / SLX BB-MT801 bottom bracket for frames with BSA thread

The Shimano BB-MT801 is an aluminium centre tube bottom bracket designed to fit a 24 mm axle crankset into a frame with a BSA bearing. With the enclosed spacers, it is suitable for shell width of both 73 mm and 68 mm. Shimano recommends the BB-MT801 for the cranksets of the XT and SLX series as well as for some no-group models from the MTB range. It features a high-quality, sealed steel bearing. The bearing cups are made of anodised aluminium. In combination with a corresponding crankset, this bottom bracket and its Hollowtech II technology ensures stability and efficiency with every pedal rotation.

Specifications:

Application:: Cross Country, All Mountain, Enduro, City & Touring
Type:: BSA
Shell Width:: 68 mm / 73 mm
Axle Diameter:: 24 mm (Hollowtech II)

Technical Information:

Bearings:: steel
Bottom Bracket Cup Material:: aluminium
Bottom Bracket Centre Tube Material:: aluminium

Compatibility:

Recommended for:

XT FC-M8100, FC-M8120, FC-M8130
SLX FC-M7100, FC-M7120, FC-M7130
XT FC-M8000
CUES FC-U8000
FC-MT700, FC-MT600
XT FC-T8000

Features:

anodised bearing cups
high-quality bearings
sealed for long service life
aluminium bottom bracket centre tube

Technology:

Hollowtech II
Shimano Hollowtech II is a crank bottom bracket system designed to achieve an ideal ratio of stiffness, weight and rotational efficiency. It is based on an integration of the bottom bracket and the right crank arm and works with a 24 mm axle or bearing diameter, which has proven to be optimal in terms of stability. In many cases, the bearing cups are on the outside so that the load is better distributed. High-quality precision seals ensure a long service life.