Shimano Bottom Bracket Cups Hollowtech II Ultegra SM-BBR60 BSA

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Features

• Outside positioned bearings for better weight distribution and more stability
• Bottom bracket has smaller, bearings than current model for lightweight
• New improved sealing ensures 50% less drag

Product features

• Use: Road
• Gruppe: Ultegra
• Model: SM-BBR60
• BB-Type: HOLLOWTECH II
• Threaded: BSA
• Threaded BB shell width: 68mm
• Shell diameter: BSA (BC 1.37)

Compatibility

• Dura Ace FC-9000
• Ultegra FC-6800
• 105 FC-5800

Material

• Aluminum

Weight

• 77g

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Scope of delivery

• 1 Shimano Hollowtech II Bottom Bracket Ultegra SM-BBR60 BSA
• 1 TL-FC25 Tool

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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.