Outlet Shimano DURA ACE BB-R9100 BSA Hollowtech II Bottom Bracket

Bottom bracket cups for the new Dura Ace Hollowtech II crankset FC-R9100. Suitable for frames with BSA thread (68mm).

Product features

• Use: Road
• Gruppe: Dura Ace
• Model: BB-R9100
• BB-Type: HOLLOWTECH II
• Threaded: BSA
• Threaded BB shell width: 68mm
• Shell diameter: BSA (BC 1.37)

Compatibility

• Dura Ace FC-R9100

Material

• Aluminum

Weight

• 65g

Scope of delivery

• 1 x Shimano Dura Ace Hollowtech II Bottom Bracket Cups BB-R9100 BSA

HOLLOWTECH II Technology

The concept of HOLLOWTECH II technology is focused on producing a superior crankset which will maximize a rider’s power transfer. The rigidity of the crankset ensures pedaling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more. Naturally, SHIMANO strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. HOLLOWTECH technology is an ultra-lightweight hollow crankarm created by SHIMANO with the company’s own proprietary forging technology that also maintains rigidity. The addition of HOLLOWTECH II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer.

Shimano DURA-ACE R9100 (Di2)