Shimano BB-MT501 English Bottom Bracket - English 68/73mm Fits Hollowtech II Spindle BLK MFPN=HCRXN72N Extremely heat resistant - certified

Extremely heat resistant - certified for rim brakes

5+ Wheel Size 29" Offset 44 External Adjustments High Speed Compression Damping External Adjustments Rebound Damping Color Matte Black Lockout Switch Crown Negative Spring Air S

5 PSI 80 TPI 60 Weight 470 Tire Type Tubeless Ready Clincher Tire Intended Use Gravel Color Black Tire Diameter 700c Tire Bead Folding Labeled Size 700 x 38 Flat Protection Sidewall ISO Width (mm) 38 ISO Diameter 622 / Road / 29"

}Shimano GRX ST-RX815 11-Speed Di2 Right Drop-Bar Shifter/Hydraulic Brake Lever with BR-RX810 Flat Mount Caliper Pre-Bled 1700mm Hose

Shimano BB-MT501 English Bottom Bracket - English 68/73mm Fits Hollowtech II Spindle BLK MFPN=HCRXN72N Extremely heat resistant - certifiedShimano BB MT501 English Bottom Bracket English 68 73mm Fits Hollowtech II Spindle Black. The Shimano BB MT501 bottom bracket for Hollowtech II provides better sealing and rotation to delivery high driving efficiency. TECH SPECS BB Shell Width (mm) 68 BB Shell Width (mm) 73 BB Frame Interface English Bottom Bracket Shell I. D. 1. 37 Defined Color Black Spindle Interface Type Shimano Hollowtech II keyword search bb52 keyword search sm bb52