Est. 1982

Shimano Deore XT MT800 Bottom Bracket


All bottom brackets are not created equal. That's why Shimano bottom brackets outlast almost all others. Superior sealing, ultra-tight manufacturing tolerances and quality bearings combine to make a bottom bracket that rolls freely and never develops play.

Bottom bracket cups for Shimano MTB Hollowtech II cranksets.


  • Direct replacement for the FC-M8000 XT crankset (English threaded or Pressfit)
  • Reduced weight and bearing drag
  • Improved mud durability
  • BB Shell Width: BSA-68/73mm or Pressfit-89.5-92mm
  • BB Type: Hollowtech II
  • Shell Diameter: BSA (BC 1.37) or Pressfit 41mm
  • Approx. Weight: 82 grams