Shimano XTR SM-BB93 bottom bracket, 68/73 mm threaded

The XTR-level bottom bracket for Hollowtech II cranks, built for mountain bike use. Smooth rotation and improved sealing mean it holds up to the mud and water that kills lesser bearing units.

Highlights

  • Threaded BSA fitting for 68 mm or 73 mm shells
  • Hollowtech II external bearing design
  • Improved sealing for mountain bike conditions
  • Average weight 73 g

Sealing that earns its keep

Bottom bracket bearings fail from contamination far more often than from load. The XTR unit's sealing is the reason it keeps turning smoothly through wet and gritty riding.

Compatibility and fit

For frames with a threaded BSA bottom bracket shell, 68 mm or 73 mm wide, used with Shimano Hollowtech II cranksets. Check your frame's shell standard and width before ordering; if you are unsure, ask us and we will confirm it.

Shimano warrants to the original retail purchaser that the Shimano bicycle division product for which they received this warranty, is free from non-conformities in material and workmanship for a period of two years and their Dura-Ace and XTR components are covered for a period of three years from the date of original retail purchase. Shimano footwear, soft goods and wheels are warranted for a period of one year.

  • MODEL NO: SM-BB93
  • XTR M9000 Series
  • Average weight: 73
  • Threaded BB shell width: 73mm
  • HOLLOWTECH II bottom bracket Threaded bottom bracket type
  • Small ball bearing
  • Threaded BB shell width: 68mm
  • Threaded bottom bracket shell width 68mm, 73mm
SeriesXTR
TypeThreaded bottom bracket (Hollowtech II)
Shell width68 / 73 mm (BSA)
Average weight73 g
SKU SHM-ISMBB93B
Barcode # 4524667997269
Brand Shimano
Shipping Weight 0.3000kg
Shipping Cubic 0.001000000m3
Unit Of Measure each

Must be installed and serviced by qualified bicycle mechanic