Shimano GRX RX820 1x12 42 Groupset

The Shimano GRX RX820 1x12-speed groupset with 42-tooth chainring - unbeatable and unstoppable

The Shimano RX820 is a gravel-specific 1x12-speed groupset with a 42-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.

Specifications:

Series:

GRX RX820

Application:

Gravel

Shifters & Derailleurs:

12-speed (mechanical)

Brakes:

disc, hydraulic (flat mount)

Components:

Crank:

170.0 mm, 172.5 mm, 175.0 mm (gradation 42 teeth)

Cassette:

10-45, 10-51

Rear Derailleur:

short / medium cage (10-45), long cage (10-51)

Compatibility:

• Shimano Micro-Spline freehubs (Shimano MTB 12-speed)

Features:

• mechanical-hydraulic GRX 12-speed groupset for gravel use (42 T crank, cassette, chain, rear derailleur, shift lever, brakes)
• uncomplicated, reliable and low-maintenance 1x setup
• MTB cassette with 10-45 or 10-51 T depending on riding style
• light and efficient Hollowtech II crank with hollow crank arms
• smooth and defined shifting
• great brake control on mixed terrain
• gravel-specific lever and lever body ergonomics
• rear derailleur with Shadow Plus technology to prevent chain drop
• chain with 126 links

Contents:

Shimano GRX RX820 1x12 42 groupset, consisting of:

• 1 x Shimano GRX crankset (FC-RX820)
• 1 x Shimano GRX rear derailleur (RD-RX822)
• 1 x Shimano XT cassette (CS-M8100-12)
• 1 x Shimano XT / Ultegra Quick-Link chain (CN-M8100)
• 1 x Shimano GRX disc brake (BR-RX820 + BL-RX820), front
• 1 x Shimano GRX disc brake (BR-RX820 + ST-RX820), rear
• 1 x Shimano SM-BH90-JK-SSR brake hose, 1000 mm (front)
• 1 x Shimano SM-BH90-JK-SSR brake hose, 1700 mm (rear)
• 2 x pair Shimano resin brake pads with cooling fins
• 1 x disc brake adapter for front 140/160 + 160/180 mm
• 2 x hose connection sets
• 2 x type A caliper bolts for front wheel
• 2 x caliper bolts for 25 mm frame diameters, rear wheel
• 1 x Shimano aluminium cassette lockring
• 1 x Shimano master link
• 1 x Shimano crank bolt
• 1 x shifter cable
• 2 x cable housings for rear wheel
• 1 x Shimano OT-RS900 cable housing for the rear deailleur
• 1 x long nose end cap for OT-RS900
• brake set ready for assembly, filled, bleeding is recommended after assembly

Order Together:

• bottom bracket: SM-BBR60 or SM-BB72-41B Pressfit Hollowtech II recommended
• 2 x brake rotor (140, 160 or 180 mm): RT-CL800 recommended

Optional accessories:

• FM to FM SM-MA-R160 D/D brake adapter for 160 mm brake rotors on 140 mm FM frames for rear wheel
• FM to FM SM-MA-R160 D/D brake adapter for 180 mm brake rotors on 160 mm FM frames for rear wheel
• Type C bolts for 10/15/20/30/35 mm frame diameter
• Type C2 bolts for 10/15/20/30/35 mm frame diameter
• K05S-RX Resin Pads
• L04C-MF Metal Pads w/ Cooling Fins