Shimano BB-RS501 ITA Hollowtech II Bottom Bracket ITA | Bike-Discount

The BB-RS501 from Shimano is a high-quality bottom bracket for frames according to ITA standard. Accordingly, it is designed for a housing width of 70 mm and right-hand threads on both sides. Usable is the Shimano BB-RS501I with ITA thread for Hollowtech II cranksets with 24 mm shaft.

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Product features – Shimano BB-RS501 | 70mm shell width | ITA

• Use: Road, Cyclocross, City, Gravel
• Model: BB-RS501
• BB-Type: HOLLOWTECH II (24mm)
• Threaded: ITA
• Threaded BB shell width: 70mm
• Shell diameter: ITA (M36)
• Mounting: screwed

Compatibility

• TIAGRA FC-4700, FC-4703
• SORA FC-3550, FC-3503, FC-R3030, FC-R3000
• CLARIS FC-R2000, FC-R2030
• GRX FC-RX600
• FC-RS520, FC-RS510, FC-RS500, FC-RS400 FC-R563, FC-R460, FC-R350 FC-CX50

Material

• Aluminum
• Resin

Weight

• 93g (manufacturer information)

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Scope of delivery

• 1 x Shimano BB-RS501 Hollowtech II Bottom Bracket ITA

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Technology

HOLLOWTECH II
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.