This Shimano GRX RX820 is a gravel-specific 2x12-speed groupset that features a 48-tooth chainring and a mountain bike cassette. This simple and reliable single chainring set-up is perfect for exploring, racing, high-speed sections, and mountain crossings. With a 48t chainring and a 11-36t cassette, this groupset provides an excellent range for those who love adventures with steep climbs. The groupset also includes a shift lever for the right, a brake lever for the left, a matching rear derailleur, a Quick-Link chain, and flat-mount disc brakes. The groupset includes: ST-RX820 STI SHIFTER RIGHT w/ BR-RX820 FRONT CALLIPER 12-SPEEDST-RX820 STI SHIFTER LEFT w/ BR-RX820 REAR CALLIPER 2 SPEEDRT-CL800 DISC ROTOR 160mm ULTEGRA / XT CENTRELOCKRT-CL800 DISC ROTOR 160mm ULTEGRA / XT CENTRELOCKCS-HG710 12SPD CASSETTE 11-36CN-M8100 CHAIN 12-SPEED XT W/ QUICK LINKFC-RX820-2 FRONT CRANKSET GRX 48-31T 172.5MM 12 SPEEDFD-RX820 FRONT DERAILLUER GRX 12-SPEED BRAZE-ONRD-RX820 REAR DERAILLUER GRX 2 x 12-SPEED 36T MAX
