SHIMANO GRX RX812 1x12s Disc Groupset

SHIMANO GRX RX812 1x12s Disc Groupset

$1,762.00 USD Sale • Save

SHIMANO GRX RX812 1x12s Disc Groupset

$1,762.00 USD Sale • Save

Item is in stock Only 1 left in stock Item is out of stock Item is unavailable

The Shimano GRX RX812 1x12-speed groupset represents a refined approach to gravel cycling, engineered for riders who demand reliability across variable terrain. This single-chainring setup eliminates front derailleur complexity while the 12-speed cassette delivers a broad gear range for climbing and descending. Shimano's hydraulic disc brakes provide consistent stopping power in wet and muddy conditions, while the ergonomic shifters and derailleurs are tuned for smooth, precise shifting under load. Built with durable materials and proven Shimano engineering, the RX812 offers the control and confidence serious gravel adventurers require.

Shifters

  • Smooth and precise shifting: 12-speed mechanical system ensures reliable performance under all conditions.

  • Ergonomic design: Reduces hand pressure and provides a better grip with a non-slip surface.

  • Ideal for wide handlebars: Offers extra control on technical terrain.
Crankset

  • 2x12 configuration: 48T–31T chainring setup for optimal gearing.

  • Compatible with 10–45T and 10–51T cassettes.

  • Available lengths: 170 mm, 172.5 mm, and 175 mm.
Front Derailleur

  • Shimano GRX RX820 front derailleur (brazed-on): Delivers precise and stable shifting for double cranksets.

  • Improved cable routing: Ensures smooth and effortless shifting, even under load.

  • Extra tire clearance: Fits tires up to 42 mm.

  • Durable construction: Resistant to mud, dust, and vibration.
Rear Derailleur

  • Integrated clutch system: Keeps the chain stable on rough terrain.

  • Service switch: Allows for faster wheel changes.

  • Compatible with 10–51T Micro-Spline cassette.
SHIMANO GRX RX812 1x12s Disc Groupset

SHIMANO GRX RX812 1x12s Disc Groupset

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