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SKU: RRDR0462

Shimano GRX RD-RX820 12-Speed Rear Derailleur with Shadow Plus Technology, Direct Mount, Wide Gear Range up to 36T, Chain Stabilizer for Gravel & All-Road Bikes, Quiet Shifting, Durable Materials, Optimized for Rough Terrain

Regular price $145.00
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Description
Specifications

Enhanced Performance Shimano GRX RD-RX820 12-Speed Rear Derailleur - Optimized for Gravel, Adventure, and Cyclocross Riding

Elevate your gravel and adventure cycling with the Shimano GRX RD-RX820 Rear Derailleur, engineered for durability, precise shifting, and versatile terrain handling. Designed with the latest Shimano technology, this 12-speed rear derailleur features innovative components and a sleek Shadow Plus design that ensures quieter, more stable rides across rough trails and mixed surfaces.

Materials & Engineering Excellence

Constructed from lightweight yet robust materials, the Shimano RD-RX820 combines durability with minimal weight (270g) for optimal performance. Its anodized aluminum body provides excellent corrosion resistance, ensuring longevity in diverse weather conditions. The direct mount design with Shimano Rear Direct Mount compatibility enables seamless integration into gravel bikes and adventure setups, offering reliable performance even in demanding environments.

Components & Technology

Equipped with the advanced Shimano Shadow RD+ shadow design, this derailleur minimizes chain slap and reduces noise for a smoother, distraction-free experience. The integrated chain stabilizer, which features an adjustable ON/OFF switch, enhances chain security during rough rides, preventing drops and ensuring consistent gear engagement. Compatible with HG 12-speed chains and supporting a gear range up to 11-34t or 11-36t cassettes, it offers a wide gear spread suitable for steep climbs and fast descents.

Style & Use Case

Designed for gravel riders, cyclocross racers, and adventure cyclists, the RD-RX820 offers a sleek and functional look that complements modern gravel and adventure bikes. Its versatile design excels on mixed terrain, providing precise, silent shifting on gravel paths, dirt roads, and technical off-road sections. Whether tackling steep ascents or flat sections, this derailleur helps you maintain an optimal cadence and a confident ride.

Innovative & Differentiating Features

- Shadow Plus technology reduces chain slap and enhances noise reduction for peaceful, controlled riding

- Adjustable chain stabilizer with ON/OFF switch allows customization for different terrain types

- Wide gear range (up to 36t max low sprocket) for versatile riding conditions

- Compatible with Shimano HG 12-speed chains for seamless, reliable shifting

- Durable, lightweight design optimized for adventure, gravel, and cyclocross disciplines

Optimize your bike's drivetrain with the Shimano GRX RD-RX820 Rear Derailleur-crafted for performance, durability, and quiet, secure shifting in all riding conditions. Experience smoother rides and greater control on your next gravel adventure or cyclocross race.

  • High-performance 12-speed rear derailleur featuring Shimano's Shadow Plus technology for enhanced stability and reduced chain slap during rugged rides.
  • Constructed from durable, lightweight aluminum materials that provide a perfect balance of strength, corrosion resistance, and low weight to improve ride efficiency and longevity.
  • Equipped with an integrated chain stabilizer and ON/OFF switch, allowing for customizable, quiet shifting and secure chain management on both rough terrains and smooth surfaces.
  • Designed with Shimano's Direct Mount and 10x1 Standard compatibility, ensuring seamless integration with a wide range of road and gravel bikes with wide gear ranges up to 36 teeth for versatile riding conditions.
  • Innovative gear range support for 11-34t and 11-36t cassettes, providing smooth, reliable performance over diverse terrains, making it ideal for gravel, adventure, and endurance cycling adventures.
Largest Cog36
Rear Der/Shifter CompatibilityShimano Road
Rear Derailleur Mount TypeShimano Rear Direct Mount
Rear Derailleur Mount Type10x1 Standard
Drivetrain Speeds12
Weight270
Chain Wrap Capacity (teeth)42
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