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

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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.  Includes adapter for installation with a standard BB tool.  


  • Excellent seals prevent wear. 
  • Includes TL-FC25 adapter (Required for installation).
  • Includes BB, spacers, inner sleeve and o-rings. 
  • Compatible with 68 and 73mm BB shells.  
  • For use with Shimano Hollowtech II cranksets.  


SKU 4524667919957
Brand Shimano