Shimano GRX FC-RX820-2 31/48T Mountain Bike Helmets and packs down to nearly

and packs down to nearly nothing

X-Sync Material Aluminum Narrow-Wide Design Yes Position Outer Primary Color Grey Speed 11 Teeth 40

and gravel riding

which improves braking consistency and power and reduces brake fade during long

Rear Specific Performance for Mixed Terrain

Shimano GRX FC-RX820-2 31/48T Mountain Bike Helmets and packs down to nearlyThe new FC RX820 2 crank balances weight and efficiency for mixed terrain riding. Gearing options cater for the specific demands of gravel riding and to maintain tighter gear steps for maintaining pedaling rhythm. GRX 12 speed, hollow arm double crankset. 31 48T: Shimano's widest range gravel oriented double crank. Tighter gear steps than 1X drivetrains make it easier to maintain pedaling rhythm Bottom Bracket: Not included SM BBR60 SM BB72 Chainline: