Shimano

GRX FC-RX820-2 Chainring - 31t, Inner Ring, 80 BCD, For 2x 12-Speed

The Shimano GRX FC-RX820-2 31t Chainring is built for riders who demand reliable shifting and efficient power transfer on mixed-terrain adventures. Designed as the inner ring for 2x 12-speed GRX drivetrains, it pairs perfectly with the matching outer ring to deliver smooth, consistent performance on gravel, dirt, and pavement alike.

Precision-machined from anodized aluminum, this 31-tooth chainring balances strength and weight for long-lasting durability and crisp front shifting under load. The 80 BCD design ensures secure fitment and compatibility with the GRX FC-RX820-2 crankset, maintaining the optimized gear range that makes Shimano’s gravel groupset a favorite among serious riders.

• Compatible with Shimano GRX FC-RX820-2 2x 12-speed cranksets
• Durable anodized aluminum construction for dependable performance
• 31-tooth inner ring offers ideal gearing for mixed-terrain riding
• 80 BCD bolt pattern ensures precise, secure fit
• Engineered for smooth, reliable front shifting and efficient power transfer