Shimano GRX FC-RX610-1 Crankset - 170mm, 12-Speed, 40t, 110 BCD, Hollowtech II Spindle Interface, Black new Stainless steel rotor with alloy

Stainless steel rotor with alloy carrier

Insulation  -  Body lining: 100% Polyester

The heart of the relief system

Venturi / Directional lens ventilation

Double-threaded barb — Securely attaches new housing or hydraulic hose to existing housing or hose

Shimano GRX FC-RX610-1 Crankset - 170mm, 12-Speed, 40t, 110 BCD, Hollowtech II Spindle Interface, Black new Stainless steel rotor with alloyThe 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. Riders can choose closer gear steps or ultimate range depending on personal need by pairing a 10 45t or 10 51t cassette with 38t or 40t chainring (cassettes and 38t chainring sold separately) Optimal gearing for mixed terrain riding Compatible with HG 12 speed chains 49. 7mm chainline