THREADED BOTTOM BRACKET 68/70 MM
BB-RS501
The SHIMANO TIAGRA bottom bracket uses a new seal construction for long-lasting performance.
BSA Shimano Hollowtech II (24 mm)
Bottom bracket width: 68mm
BB diameter: 33.6-33.9 mm
BB outer bearing diameter: 44 mm
BB Fit: External Threaded Bearings
Weight: 93g
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