The Shimano RX820 is a gravel-specific 1x12-speed groupset with a 40-tooth chainring and mountain bike cassette. The single chainring set-up is suitable for those who like things to be uncomplicated and are looking for an all-purpose crank for exploring, racing, high-speed sections and mountain crossings. In keeping with the slogan " unbeatable" , combine it with a 10-45 tooth cassette if you enjoy competing and appreciate weight savings. Or you can choose an " unstoppable" 10-51 tooth cassette if you love adventures with steep climbs and comfort is important to you. In both cases, you will benefit from the reliability, durability and simplicity of the GRX RX820. With this groupset, Shimano has once again expanded the range of its gravel components to reflect the spirit, individuality, sense of freedom and community of gravel enthusiasts. The groupset also includes a shift lever for the right, a brake lever for the left, the matching rear derailleur, a Quick-Link chain and flat-mount disc brakes.
Series: GRX RX820
Shifters & Derailleurs: 12-speed (mechanical)
Brakes: disc, hydraulic (flat mount)
Crank: 170.0 mm, 172.5 mm, 175.0 mm (gradation 40 teeth)
Cassette: 10-45, 10-51
Rear Derailleur: short/medium cage (10-45), long cage (10-51)