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.
- Optimal gearing for mixed-terrain riding
- 10-45T and 10-51T cassette options serve array of riding styles
- 42T and 40T chainrings available
Shimano GRX RX-820 Crankset - 1x12
MODEL NO _ FC-RX820-1
SERIES _ GRX 12-speed
Color _ Series color | Series color
Average weight _ 644 (40T) 656 (42T)
Rear speeds _ 12 - 12
Compatible chain _ HG 12-speed
Chain line (mm) _ 49.7 - 49.7
P.C.D. (mm) _ 110 - 110
Spider/gear arms _ 4
Chainring combination _ 40T, 42T | 40T, 42T
Q-factor (mm) _ 151
Crank arm length (mm)|170 _ ✔
Crank arm length (mm)|172.5 _ ✔
Crank arm length (mm)|175 _ ✔
Optional chain guard|Without chain/bash guard _ ✔
HOLLOWTECH II _ ✔
HOLLOWTECH crank arm _ ✔
Compatible bottom bracket type|Outboard _ ✔
Recommended bottom bracket|Threaded (normal) _ SM-BBR60 | SM-BBR60
Recommended bottom bracket|Press-Fit _ SM-BB72 | SM-BB72
Threaded bottom bracket shell width (mm)|68 _ ✔
Threaded bottom bracket shell width (mm)|70 _ ✔
Crank fixing screw included _ ✔
-If you are not 100% satisfied with your purchase, you can return the product and we'll refund the full cost of the item minus shipping costs or exchange the product for another one, be it similar or not.
-You can return a product for up to 30 days from the date you purchased it.
-Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt.