Shimano GRX FC-RX610-1 Crankset - 170mm 12-Speed 40t 110 BCD Hollowtech II Spindle Interface BLK CheckoutTitle=Shimano Tiagra ST-4725/BR-4770 Mechanical Shift/Hydraulic Brake Lever and Caliper - Front Wide link design increases rigidity

Wide link design increases rigidity

Does not include tool box

Color Silver Rise 40 Material Aluminum Upsweep 5 Defined Color Silver Back Sweep (deg) 8

CoreFlex split rear folding thoracic strut is designed to work with the body’s natural movements for a more comfortable fit and break away before applying excessive pressure to the back

Crown races for Wolf Tooth headsets

Shimano GRX FC-RX610-1 Crankset - 170mm 12-Speed 40t 110 BCD Hollowtech II Spindle Interface BLK CheckoutTitle=Shimano Tiagra ST-4725/BR-4770 Mechanical Shift/Hydraulic Brake Lever and Caliper - Front Wide link design increases rigidityShimano GRX FC RX610 1 Crankset 170mm 12 Speed 40t 110 BCD Hollowtech II Spindle Interface Black. The Shimano FC RX610 crank balances weight savings optimized efficiency and an array of gearing options that cater to the segmented demands of mixed terrain riding. TECH SPECS Color Black Rings 40 Number of Chainrings Single Crank Length (mm) 170 Crank Intended Use Gravel Drivetrain Speeds 12 Weight 812 BB Included No Pedal Spindle 9 16" Spindle Interface