Shimano GRX FC-RX820-1 12 Speed Chainring Size:42t Our new model name comes

Our new model name comes directly from our racing heritage

Application: Gravel

so you can concentrate on the trail ahead

Compatible with all GoPro Cameras

Up to 80 hour runtime

Shimano GRX FC-RX820-1 12 Speed Chainring Size:42t Our new model name comesWide array of options delivers optimal gravel gearing for variety of riders. The SHIMANO FC RX820 1 chainring 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. Features Optimal gearing for mixed terrain riding 42T and 40T chainrings available