FC-RX820 GRX chainset 40T, single, 12-speed

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.
• The FC-RX820-1 comes in 170, 172.5, and 175 mm crank arm lengths, providing an additional level of customization.

Features:

• Optimal gearing for mixed-terrain riding
• 10-45T and 10-51T cassette options serve array of riding styles