Shimano GRX FC-RX820 Chainset 42T Single 12-Speed Hollowtech II 170mm
Experience a smoother, more efficient ride whether you're taking the road less travelled to commute to work or exploring gravel paths.
Upgrade your gravel bike with the Shimano GRX FC-RX820 12-Speed Chainset, designed for rugged reliability, smooth power transfer, and optimal gearing across mixed terrain. As part of the world’s first dedicated gravel groupset, this lightweight and durable crankset ensures stability, efficiency, and seamless performance on every ride.
- Gravel-Specific Design – Optimised for mixed terrains and diverse riding styles
- HollowTech II Crankset – Lightweight yet strong for enhanced power efficiency
- 42T Single Chainring – Ideal for gravel adventures, endurance riding, and off-road exploration
- Compatible with 12-Speed Hyperglide+ Chains – Ensures smooth, precise shifting
- Durable & Lightweight Construction – Anodized aluminium crank arms and aluminium chainring for long-lasting performance
- 4-Arm, 110mm BCD – Optimised stiffness and weight savings
- Works with HollowTech II Bottom Bracket Cups – Ensures seamless integration and easy installation
Designed for gravel cyclists of all levels, Shimano GRX delivers exceptional comfort, precise shifting, and unmatched reliability on every ride. Whether you're a beginner or a seasoned explorer, this high-performance chainset is built to handle the toughest trails and longest adventures.
Shimano GRX is the World's first dedicated gravel component group. Gravel cycling thrives on inclusivity and exploration. From beginners to seasoned riders, cyclists trust Shimano GRX, the industry's first gravel-specific groupset, for seamless shifting, dependable braking, and unmatched comfort on any terrain.