Shimano XT BB-MT800 68-73mm External Bottom Bracket

2 Reviews
$42.95
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Premium XT bottom bracket keeps the elements out and your cranks spinning freely.

The XT BB-MT800 uses smaller ball bearings for smooth operation while durable seals keep the dirt and grime out. The BB-MT800 is compatible with Shimano Hollowtech II cranks and 68/73mm BB shells.

Installation:

The smaller diameter 16 notch 41mm cups on this BB requires the Park BBT-59.2 41mm OD External BB Tool for installation.

If you already own a larger 16 notch 44mm BB tool you can save a few dollars with the Shimano TL-FC25 Bottom Bracket Adaptor Tool (see links & more info section).

Features:

  • Excellent seals prevent wear
  • 16 notch 41mm cups
  • Includes BB, spacers, inner sleeve and o-rings
  • Compatible with 68 and 73mm BB shells
  • For use with Shimano Hollowtech II cranksets
For the Park BBT-59.2 41mm OD External BB Tool, CLICK HERE.

For the Shimano TL-FC25 Bottom Bracket Adaptor Tool, CLICK HERE.
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24mm
BSA Threaded - 68-73mm Shell
$‎42.95
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Reviews

4.5

A tidy little black number

by

Anyone who's fitted a Hollowtech BB to their bike knows all about this already: standard decent Shimano quality, etc. For those who are upgrading from the older Hollowtech BB with the 44mm cups (e.g. the silver-coloured XT BB70), a plastic tool adapter is supplied but this won't fit all styles of BB cup tool. I bought a Park Tool BBT59.2 to fit this, which worked a treat, as the adapter was not compatible with my old IceToolz cup wrench. Once in, it looks nice and neat, the smaller cups are a bit more tidy than the older, wider ones. Time will tell if the smaller bearings will take the strain!

Stoked!!!

by -

Way smoother than my old slx bottom bracket.

Ratings & Reviews

2 reviews

  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

A tidy little black number

by

Anyone who's fitted a Hollowtech BB to their bike knows all about this already: standard decent Shimano quality, etc. For those who are upgrading from the older Hollowtech BB with the 44mm cups (e.g. the silver-coloured XT BB70), a plastic tool adapter is supplied but this won't fit all styles of BB cup tool. I bought a Park Tool BBT59.2 to fit this, which worked a treat, as the adapter was not compatible with my old IceToolz cup wrench. Once in, it looks nice and neat, the smaller cups are a bit more tidy than the older, wider ones. Time will tell if the smaller bearings will take the strain!

Stoked!!!

by -

Way smoother than my old slx bottom bracket.

Specifications

ItemBarcode
Shimano XT BB-MT800 68-73mm External Bottom Bracket4524667919957PRNT
24mm - BSA Threaded - 68-73mm Shell4524667919957

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