Shimano GRX FC-RX820 1x12 Speed Chainset

Features:

• Optimal gearing for mixed-terrain riding
• 42T and 40T chainrings available
• Anodized aluminium crank arms
• Lightweight aluminium chainring
• 4 arm, 110 mm bolt circle diameter
• Compatible with 12-speed Hyperglide+ chains

Wide array of options deliver optimal gravel gearing for variety of riders.

The Shimano FC-RX820-1 crank balances weight savings, optimized efficiency and an array of gearing options that cater to the segmented demands of mixed-terrain riding. By pairing a 10-45T or 10-51T cassette with 40T and 42T chainring, riders can choose closer gear steps or ultimate range. The FC-RX820-1 comes in 170, 172.5, and 175mm crank arm lengths, adding an additional level of customization.

Technical specifications:

• Speeds: 1x12s
• Chainring size: 40T or 42T
• Crank arm length: 170mm or 172.5mm or 175mm
• BCD: 110mm
• Spindle: 24mm
• Crank arm material: Aluminium
• Chainring material: Aluminium
• Weight: 655g (40T 172.5mm) / 667g (42T 172.5mm)