SHIMANO GRX - Gravel Crankset - 1x12-speed
FC-RX820-1
NEW
Wide array of options delivers optimal gravel gearing for variety of riders
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
- 42T and 40T chainrings available
PRODUCT SPECIFICATIONS
| MODEL NO | FC-RX820-1 |
|---|---|
| SERIES | GRX 12-speed |
| Color | Series color |
| Average weight | 644 (40T) 656 (42T) |
| Rear speeds | 12 |
|---|---|
| Compatible chain | HG 12-speed |
| Chain line (mm) | 49.7 |
| P.C.D. (mm) | 110 |
| Spider/gear arms | 4 |
| Chainring combination | 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 |
| Recommended bottom bracket|Press-Fit | SM-BB72 |
| Threaded bottom bracket shell width (mm)|68 | ✔ |
| Threaded bottom bracket shell width (mm)|70 | ✔ |
| Crank fixing screw included | ✔ |
TECHNOLOGIES
Manuals & Technical Documents
REPLACEMENT PARTS
