Shimano Deore XT BB-MT801 Bottom Bracket — BSA Threaded 68/73mm, HOLLOWTECH II,
Shimano Deore XT BB-MT801 is a HOLLOWTECH II threaded (BSA, 68/73 mm) mountain bottom bracket with sealed bearings for smooth, durable performance.
Genuine Shimano Deore XT, brand new in retail packaging.
Will it fit? A BSA (English) threaded bottom bracket for 68 mm or 73 mm shells, taking any Shimano HOLLOWTECH II 24 mm mountain crank (XT, SLX, Deore and compatible). Note: installation needs a Park Tool BBT-59.3 or equivalent, as these cups take a smaller tool than a standard bottom bracket.
Key Specifications
Brand | Shimano |
Series | Deore XT M8100 |
Model | BB-MT801 |
MPN | IBBMT801B |
UPC | 192790605913 |
Type | Bottom bracket, external bearing |
Frame interface | BSA / English threaded (1.37 in) |
Shell width | 68 mm or 73 mm |
Spindle interface | 24 mm HOLLOWTECH II |
Tool required | Park Tool BBT-59.3 or equivalent |
Material | Aluminum and steel |
Weight | 84 g (3.0 oz) |
Color | Black |
Country of Origin | Japan |
Condition | Brand new, original Shimano retail packaging |
Technology Highlights
✓XTR technology at XT level. The MT801 inherits the flagship design, so it runs lighter and with less bearing drag than the previous XT bottom bracket.
✓Improved seals. Updated sealing keeps mud and grit out, which is what actually determines how long a bottom bracket lasts.
✓Smaller ball bearings. Finer bearings improve rotation and reduce drag.
✓External bearing HOLLOWTECH II. Bearings sit outboard of the shell for a wider bearing span, which means better lateral stiffness under pedalling load.
✓Fits 68 or 73 mm shells. One part covers both standard threaded mountain frame widths.
What's in the Box
1 × Shimano Deore XT BB-MT801 bottom bracket (drive and non-drive cups)
Spacers and documentation as supplied
Original Shimano retail packaging
Brand new in retail packaging. Ships from Ontario, California (US domestic) · Estimated delivery 3–5 business days · Free 30-day returns.
