Shimano Dura Ace BB-R9100 Hollowtech II BSA Type Bottom Bracket

• Material: [cups] aluminum
• Shell Width: [English] 68 mm, [Italian] 70 mm
• Threading: English, Italian
• Manufacturer Warranty: 3 years

Dura-Ace BB92, BB9000 Hollowtech II Bottom Brackets Item Specifications: Weight: 65, BB/Frame Interface: English, Spindle Interface Type: Hollowtech II, BB Shell Width: 68, Defined Color: Black, Bottom Bracket Shell I.D.: 1.37",