Shimano Dura-Ace BB-R9100 bottom bracket, Italian 70 mm

The Dura-Ace threaded bottom bracket runs small ball bearings behind an advanced seal design, so it turns smoothly and keeps grit out without adding weight. This is the Italian-thread version for 70 mm shells.

Highlights

  • Dura-Ace threaded bottom bracket, part code BB-R9100
  • Hollowtech II
  • 70 mm Italian-threaded shell
  • Average weight 65 g

Seals and bearings

Advanced seal construction keeps water and road grime away from the bearings, which is what decides how long a bottom bracket stays smooth. Small ball bearings keep the rotating weight down.

Compatibility and fit

For frames with a 70 mm Italian-threaded bottom bracket shell, paired with a Shimano Hollowtech II road crankset. It will not fit a 68 mm English-threaded shell, so check your frame before ordering. If you are not sure which standard your frame uses, our workshop can measure it.

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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.

  • Bottom bracket with small ball bearings for lightweight
  • Advanced seal construction for smoother rotation
  • MODEL NO: BB-R9100
  • DURA-ACE R9100 Series
  • Average weight: 65
  • Threaded BB shell width_70mm    
  • HOLLOWTECH II bottom bracket_Threaded bottom bracket type    
  • Small ball bearing
  • Threaded BB shell width_68mm    
  • Threaded bottom bracket shell width (mm)_68    
  • Threaded bottom bracket shell width (mm)_70
SeriesDura-Ace ModelBB-R9100 TypeThreaded, Hollowtech II Shell width70 mm (Italian) Average weight65 g ]]>
SKU SHM-IBBR9100I
Barcode # 4524667858607
Brand Shimano
Shipping Weight 0.3000kg
Shipping Width 0.160m
Shipping Height 0.060m
Shipping Length 0.220m
Shipping Cubic 0.001000000m3
Unit Of Measure each

Must be installed and serviced by qualified bicycle mechanic