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Its semi-open blocks allow for optimal self-cleaning properties with low rolling resistance
it pairs ideally with the Rocket Ralph at the rear for the optimal combination for Cross-Country competition
allowing it to be used both in the workshop and outdoors
spécialement pour le Gravel
Boitier de Pédalier SHIMANO BB-RS501 BSC Best Its semi-open blocks allow forDesigned for 68 mm frames and 24 mm crank axles, the SHIMANO Tiagra BB RS501 BSA Hollowtech II threaded bottom bracket features bearings that are even smoother and more sealed than the previous generation. The bearing size has also been revised to save weight. Compatibility chart A Diameter (mm) B Width (mm) Assembly Standard 34,8 68 threaded BSC BSA 34,8 73 threaded BSC BSA 34,8 83 threaded BSC BSA 34,8 100 threaded BSC BSA 27 95,5 press fit BB 96
