The SHIMANO GRX FC-RX610-1 crank balances weight savings, optimized efficiency and an array of gearing options that cater to the segmented demands of mixed-terrain riding.
By pairing a 10-45T or 10-51T cassette with 38T or 40T chainring, riders can choose closer gear steps or ultimate range depending on personal need. The FC-RX610-1 comes in 165, 170, 172.5, and 175 mm crank arm lengths, providing an additional level of customization.
BENEFIT
Optimal gearing for mixed-terrain riding
FEATURE
10-45T and 10-51T cassette options serve array of riding styles
BENEFIT
38T and 40T chainrings available
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Model No
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FC-RX610-1
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Series
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GRX
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Rear Speeds
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12
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Compatible Chain
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HG 12-speed
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Chain Line (mm)
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49.7
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P.C.D. (mm)
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110
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Spider/Gear Arms
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4
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Chainring Combination
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38T, 40T
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Q-Factor (mm)
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151
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Crank Arm Lengths (mm)
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165, 170, 172.5, 175
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Optional Chain Guard
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Without chain/bash guard
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2-Piece Crankset
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✔
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HOLLOWTECH Crank Arm
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✔
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Compatible Bottom Bracket Type
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Outboard
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Recommended Bottom Bracket
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Threaded (BB-RS501), Press-Fit (BB-RS500-PB)
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Threaded Bottom Bracket Shell Width (mm)
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68, 70
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Crank Fixing Screw Included
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✔
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Average Weight (g)
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791 (38T), 812 (40T)
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