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 Spoke Interface J-Bend Skewer Included

Spoke Interface J-Bend Skewer Included No Defined Color Black Rear Axle 12mm Thru x 142mm Color Black Weight 357 Hub Drilling 32 Bearing Type Loose Ball Hub/Brake Compatibility Center-Lock Disc Cassette Body Type Shimano Dynasys 11 Speed Mountain Cassette Body Type Shimano/SRAM 8 9 10 Speed

Bash rings that are mounted on the crankset are better supported than bash rings that are mounted to the frame or bottom bracket

Does not include tool box

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 Spoke Interface J-Bend Skewer IncludedShimano 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