Shimano GRX RX810 1×11 42 Groupset


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Shimano GRX RX810 1×11 42 Groupset

– made for explorers

The Shimano GRX RX810 1×11 groupset results from a two-year close collaboration with Gravel enthusiasts from around the world. It includes a 1x crank with a 42 tooth chainring, +rear derailleur, disc brake with STI right and left shift levers, chain and cassette (Ultegra or MTB). Shimano didn’t want to tell the Gravel specialists what to ride, but asked them what they wanted instead. Many unpaved paths were explored, off-road races contested, bikepacking tours undertaken, a lot of dust swallowed and mud bath galore. The result is the world’s first Gravel-specific component groupset, the GRX by Shimano.


Series: GRX RX810

Application: Gravel, Cyclocross, City & Touring

Shifters & Derailleurs: 11-speed (mechanical)

Brakes: disc, hydraulic (flat mount)


Cranks: 170.0 mm, 172.5 mm, 175.0 mm (42 teeth)

Cassette: 11-30, 11-32, 11-34, 11-40, 11-42

Front Derailleur: braze-on

Rear Derailleur: short (mid) cage (11-30, 11-32, 11-34), long cage (11-40, 11-42)


The Shimano GRX RX810 groupset includes:

– 1 x Shimano GRX crankset (FC-RX810-1)

– 1 x Shimano GRX Shadow Plus rear derailleur (RD-RX810 or RD-RX812)

– 1 x Shimano Ultegra cassette (CS-R8000) or CS-HG800-11 (11-34) or XT CS-M8000

– 1 x Shimano Ultegra / XT Quick-Link chain (CN-HG701-11)

– 1 x Shimano GRX BR-RX810 + GRX BL-RX810 disc brake, front

– 1 x Shimano GRX BR-RX810 + GRX ST-RX810 disc brake, 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 pairs Shimano L03A brake pads

– 1 x adapter for 140/160 mm rotors (front)

– 2 x hose connecting bolt units

– 2 x type A caliper bolts (front)

– 2 x caliper bolts for 25 mm frame diameters (rear)

– 1 x Shimano 1.85 mm cassette spacer (only for 11-34)

– incl. Shimano TL-BH61 tool

– incl. 2200 mm shifter cable (rear)

– incl. 600 + 300 mm cable housing (rear)

– incl. end caps

not incl. bolts for 10/15/20/30/35 mm frame diameters

– mount ready (filled & bled)



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