Shimano GRX RD-RX812 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, For 1x

Description

• High-performance 11-speed rear derailleur designed for gravel, cyclocross, and mixed-terrain riding, featuring a durable black finish and long cage length for enhanced gear range.
• Advanced GRX technology with integrated chain stabilizer (Clutch system) ensures silent, secure shifting and reduces chain drop on rough surfaces, improving reliability across varied terrain.
• Compatible with road Dual Control Levers, LinkGlide, and HG 11-speed chains, offering seamless integration and versatile use for mountain biking and gravel adventures.
• Innovative gravel-tuned clutch tension and adjustable chain stabilizer provide precise, smooth shifting under load, while the ON/OFF switch allows manual chain tension control for optimized performance on different surfaces.
• Constructed from materials with a Direct Mount interface and 42T low sprocket capacity, this derailleur maximizes durability and gear range, making it ideal for demanding gravel and adventure cycling.

What Our Gearhead Experts Are Saying: "I switched to the GRX RX812 for my 1x gravel rig and havent looked back. The clutch keeps my chain tight over chunky descents, and shifting stays smooth even when my drivetrains covered in dust and mud. Its basically MTB toughness adapted perfectly for drop bars."From washboard descents to rocky doubletrack climbs, we rely on the Shimano GRX RX812 Rear Derailleur to keep our shifting crisp and our chain quiet. Purpose-built for gravel and adventure riding, this derailleur brings proven Shimano MTB tech into the drop-bar world, so we can charge harder without worrying about dropped chains or ghost shifts. The RX812 uses a clutch-based Shadow RD+ design to maintain consistent chain tension, especially when the terrain gets rough. It's optimized for a 1x11 drivetrain with an 1142t cassette range, giving us simplicity up front and plenty of gearing in the back. Whether were racing a gravel grinder or tackling a weeklong bikepacking route, this derailleur delivers smooth, reliable performance with zero drama.

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