Product Details

The Shimano GRX FC-RX820-2 is a lightweight and very efficient 2x12-speed crank for gravel use of all kinds. The single chainring set-up is suitable for riders who want to combine the flexibility of conventional road bike gears with off-road capability. The gear ratio has been chosen so that you can always pedal smoothly. You are fast on the flat and make good progress on climbs, no matter what the terrain is like. Even when riding in a group, you will find the right gear. Featuring the proven Hollowtech II design for highly efficient power transmission and outstanding stiffness with the lowest possible weight.

• 2x12-speed aluminium crank for gravel use
• Optimised for mixed terrain and different riding styles
• Gear ratio helps to maintain a steady pedalling rhythm even on rough surfaces
• Perfect gradation also for riding in a group
• Generous 17-tooth difference between chainrings for changing conditions
• Hollowtech II: Hollow crank arms provide balance between stiffness, stability, weight and rotational efficiency
• Anodised crank arms
• Chainring lacquered, anodised teeth
• Aluminium chainring bolts
• 48-31t chainrings
• Q-Factor: 151 mm
• Chainline: 47 mm
• Axle Diameter: 24 mm
• Chainring Mount: 110/80 mm bolt circle, 4-arm asymmetrical
• Recommended Bottom Bracket: SM-BBR60 or SM-BB72-41B Press Fit Hollowtech II (not included)
• Recommended Chain: HG 12-speed (e.g. CN-M8100)
• Weight: 170.0 mm: 710g

About Shimano
Established in Japan in 1921, Shimano is the worlds largest bicycle component manufacturer. Whether it be drive systems, brakes, pedals or shoes, Shimano stands for reliable quality and performance. From Road & Gravel to Mountain, Touring & Urban use, Mechanical or Electric.