Shimano Black Shimano GRX RX820 Hollowtech crankset 2025

Crankset. Crank arm length: 175 mm. Chainrings: 40T. The SHIMANO FC-RX820-1 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 40T and 42T chainrings, riders can choose closer gear steps or ultimate range.

• Optimal gearing for mixed-terrain riding
• 10-45T and 10-51T cassette options serve array of riding styles
• Rear speeds: 12
• Compatible chain: HG 12-speed
• Chain line: 49.7 mm
• P.C.D.: 110 mm
• Q-factor: 151 mm
• HOLLOWTECH II
• HOLLOWTECH crank arm
• Recommended bottom bracket: Threaded (normal): SM-BBR60, Press-Fit: SM-BB72
• Average weight: 644 (40T) 656 (42T)