Shimano GRX 820 12-Speed Mechanical Single 1x Groupset

Shimano’s 1x12 RX820 is the go-to choice. The lightweight efficiency of the single set-up with a 10-45 cassette brings confidence to any road or start line. The high-end components ensure optimal cadence whether maintaining your position in the bunch or charging off the front. It’s also a perfect upgrade if you want a drivetrain that you can trust to keep going as long as you can. A single ring keeps things simple – plus there’s less chance of a mud build-up. With Shimano GRX, you are 

UNBEATABLE.

An all-day or multi-day explorer who favours long climbs and remote backroads?

Shimano’s wide-range 1x12 RX820 is the way to go. The 10-51 cassette paired with a 40T or 42T chainring will keep you spinning comfortably even on the steepest jeep roads or highest alpine ascents. It allows you to expand your horizons and make gravel your playground. And if you’re treating yourself to an upgrade, you’ll be able to revisit old trails with new vigour – and more speed. Plus the single ring keeps things simple on tough tracks and no worries about mud build-ups either. With Shimano GRX, you are UNSTOPPABLE.

Best-in-class braking system

The new GRX levers use SERVOWAVE tech, bringing a new level of control. The Dual Control Lever (ST-RX820) delivers light and responsive mechanical 12-speed shifting for mixed-terrain riding and racing (the ST-RX820-LA option integrates dropper post operation for a cleaner cockpit). The GRX disc brake calliper (BR-R820) brings enhanced modulation and a quicker initial braking point for fantastic stopping power on tricky terrain. 

Enhanced ergonomics

Designed for use with flared handlebars – a gravel-cycling staple – the new brake/shift levers (ST-RX820) feature anti-slip texturing on the tops and dramatically improved ergonomics that lessen the pressure on your palms. A minimal update for the cockpit brings maximum comfort and control.