GRX FC-RX610 Crankset mountain wheels Our next-generation MasterMind TCU is

Our next-generation MasterMind TCU is your information hub

Forged premium 7050 aluminum 24mm MegaExo spindle

To develop a next-generation saddle

such as square taper or PowerSpline

GRX FC-RX610 Crankset mountain wheels Our next-generation MasterMind TCU isThe 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