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Shimano Dura-Ace BB-R9100 70mm Bottom Bracket

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The Shimano Dura-Ace BB-R9100 Bottom Bracket is a great representation of Hollowtech II technology and features smaller, lightweight bearings and an advanced seal construction for smoother rotation and increased durability. The driveside (right) crankarm and the bottom bracket spindle are an integrated unit and the bearings are placed outside of the bottom bracket shell for better weight distribution and more stability. Connecting the crankset to the bike in the engine room of your bike’s chainset, the Shimano R-9100 Bottom Bracket allows the crankset to rotate freely and helps to boost your cycling efficiency. If supreme-quality components are a priority on your bike, then make Shimano your only go-to-brand for premium workmanship, long-life product reliability and unsurpassed on-the-bike performance.

Box Contents 1 x BB-R9100 Bottom Bracket 1 x External Bottom Bracket Tool 1 x User Manual

• Bottom Bracket with small ball bearings for reduced weight • Advanced seal construction for consistently smoother rotation • Exterior positioned bearings offer better weight distribution & more stability • Integrated driveside crankarm & bottom bracket spindle • Compatible with HollowTech II cranks • External Bottom Bracket tool supplied • Easy Installation • Italian Threaded BB type • Spindle Interface Type: Hollowtech II • Cups Material: Aluminium • Shell Material: CFRP • BB Shell Height: 36 x 24mm • BB Shell Width: 70mm • Suits: Road • Weight: 72g • Made in Japan