Shimano GRX FC-RX820 Chainset 42T Single 12-speed Hollowtech II – 170mm

Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world.

Key Features:

• The HollowTech II 12-speed single chainset offers optimum gearing for mixed terrains and riding styles
• Designed to work with HollowTech II type bottom bracket cups
• Compatible with 12-speed Hyperglide+ chains
• Anodized aluminium crank arms
• Lightweight aluminium chainring
• 4 arm, 110 mm bolt circle diameter