The Shimano BB-RS501 bottom bracket features a special seal design which noticeably extends the service life. The bearing cups with BSA thread are perfectly matched to the interaction with Hollowtech II cranksets.. Features Designed for a perfect fit with
The Shimano BB-RS501 bottom bracket features a special seal design which noticeably extends the service life. The bearing cups with BSA thread are perfectly matched to the interaction with Hollowtech II cranksets..
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