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SHIMANO's 12-speed gravel component group now also available as an electronic version! The new 2x12-speed GRX RX825 Di2 components combine SHIMANO's unique electronic shifting with gearing options optimized for recreational riding, racing and daily adventures.
Optimal gearing for dynamic group rides and aggressive racing
The Shimano FC-RX820-2 combines weight savings and optimized efficiency for mixed terrain riding and racing. Dual chainring gearing options are tailored to different gravel demands while maintaining the tighter gear steps needed to maintain position in the field. The 2x12-speed crankset is available in a 48-31T chainring combination and in crank arm lengths of 170, 172.5 and 175 mm.
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dutchShimano GRX RX825 Di2 Disc 2x12 groupset
SHIMANO's 12-speed gravel component group now also available as an electronic version! The new 2x12-speed GRX RX825 Di2 components combine SHIMANO's unique electronic shifting with gearing options optimized for recreational riding, racing and daily adventures.
Optimal gearing for dynamic group rides and aggressive racing
The Shimano FC-RX820-2 combines weight savings and optimized efficiency for mixed terrain riding and racing. Dual chainring gearing options are tailored to different gravel demands while maintaining the tighter gear steps needed to maintain position in the field. The 2x12-speed crankset is available in a 48-31T chainring combination and in crank arm lengths of 170, 172.5 and 175 mm.
PRODUCT SPECIFICATIONS
| MODEL NUMBER | FC-RX820-2 |
|---|---|
| GROUP | Shimano GRX 2x12-speed Di2 |
| color | Standard color |
| Average weight | 710 |
| Rear gear steps | 12 |
|---|---|
| Compatible chain | 12-speed HG |
| Chainline (mm) | 47 |
| Bolt circle diameter (mm) | 110/80 |
| Spider/chainring arms | 4 |
| Chainring combination | 48-31Z |
| Q-factor (mm) | 151 |
| Crank arm length (mm)|170 | ✔ |
| Crank arm length (mm)|172.5 | ✔ |
| Crank arm length (mm)|175 | ✔ |
| Chain guard option|Without chain/ramp guard | ✔ |
| HOLLOWTECH II | ✔ |
| HOLLOWTECH crank | ✔ |
| Compatible bottom bracket type|outside | ✔ |
| Recommended bottom bracket|thread (normal) | SM-BBR60 |
| Recommended bottom bracket|press fit | SM-BB72 |
| Bottom bracket shell width with thread (mm)|68 | ✔ |
| Bottom bracket shell width with thread (mm)|70 | ✔ |
| Fastening screw for crank included | ✔ |