Shimano GRX RX820 Unbeatable Groupset, 1x12, with Crankset & Disc Brakes

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The new Shimano GRX RX820 Unbeatable Groupset, 1x12, with Crankset & Disc Brakes is an ideal option for all competitive gravel cyclists. It marries Shimano's renowned mechanical shifting precision with carefully calibrated gear ratios tailored for gravel riding. GRX RX820 is a top-tier choice for riders seeking high-performance combined with light weight. Whether you're competing in gravel races or embarking on extensive bike packing adventures, the new GRX R820 offers the reliability and efficiency you need.

If you're always striving for personal best times on your rides or have your sights set on dominating races, you'll certainly appreciate the new GRX RX820 Unbeatable 1x12 Groupset. It comes with a 10-45 cassette and your choice of a 40T or 42T chainring. Building upon its 11-speed predecessor, the RX820 offers the same smooth, dependable shifting but now with a broader range and an additional gear. This makes it easier to find the perfect cadence to stay competitive in a race or maintain your pace during your rides. The Groupset also incorporates an integrated SHADOW-PLUS clutch derailleur for optimal chain retention and tension. Additionally, the derailleur includes a clutch ON/OFF switch, simplifying wheel removal during service or in case of a flat tire.

The new ST-RX820 brake/shift levers have been specially developed for use with flared handlebars, which have become synonmous with gravel riding. They feature a non-slip surface texture and improved ergonomics that reduce pressure on your palms. These enhancements translate to increased comfort and control, allowing you to confidently navigate challenging terrain or concentrate on the gravel road ahead.

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Components included in groupset:

Cassette: XT CS-M8100-12 (10-45T)

Rear Derailleur:
 
GRX RD-RX822-SG 12-speed medium cage (45T max low sprocket, 45T min low sprocket)

Shifter/Levers: 
GRX ST-RX820-R Hydraulic Disc Brake DUAL CONTROL LEVER 12-speed (right)
GRX ST-RX820-LA Hydraulic Disc Brake and Dropper Post Lever (left)
For a streamlined cockpit and easy access to the seat dropper post lever, the Shimano GRX ST-RX820-LA dual control lever integrates the brake lever and dropper lever for fast and effortless operation.


Chain: CN-M8100 12-speed, 126 links with Quick-Link

Crankset: GRX FC-RX820-1 (170mm) (172.5mm) (175mm) (40T) (42T)

Bottom Bracket: 
SM-BBR60 (68/70mm) HOLLOWTECH II, Threaded
or
SM-BB72-41 (86.5mm) HOLLOWTECH II, Press-Fit

Brakes (calipers):
 GRX BR-RX820-F (front) & GRX BR-RX820-R (rear), L05A-RF Resin pads, 1000mm front hose, 1700mm rear hose & all mounting hardware.
J-Kit - SM-BH90-JK-SS brake lines are filled with mineral oil and pre-assembled on BR-RX820 calipers!

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