Shimano BB-RS500-PB Hollowtech II Press Fit 41 x 86.5 mm Bottom Bracket

Shimano BB-RS500-PB bottom bracket - Press Fit for GRX, Tiagra and other cranksThe Press Fit BB-RS500-PB bottom bracket is recommended by Shimano for the GRX, Tiagra, Sora and Claris series. This allows a Hollowtech II or 2-piece crank with a 24mm axle to