Shimano FC-RX820-2 GRX 12-Speed Double 31T-ND For 48-31T Inner Chainring

The Shimano FC-RX820-2 GRX 12-Speed Double 31T-ND Inner Chainring is a precise and durable replacement option built to maintain smooth shifts and strong power transfer on gravel rides. It provides a balance of low weight and rigidity, ensuring stable performance under load, and supports the 48-31T setup used in FC-RX820 cranksets for consistent pedalling on mixed terrain. Its standout strength is its efficient pairing with Shimano s HG+ 12-speed chain, which enhances shifting accuracy and drive efficiency.Key Features and Benefits:31T inner chainring design for the 48-31T combination: This provides a wide gear range that supports steady cadence on steep gravel climbs. This leads to smoother pedalling and reduced strain in demanding terrain.Lightweight aluminium construction: This lowers system weight while keeping the structure rigid under force. This improves shift response and maintains drivetrain stability when torque is high.Anodised teeth on the chainring: This protects the surface from wear during heavy use. This increases long-term durability and helps maintain consistent chain engagement.Optimised compatibility with the Shimano HG+ 12-speed chain: This enhances chain retention and shift timing. This improves drive efficiency and results in reliable performance across mixed surfaces.4-arm, 80 mm BCD fitting layout: This ensures secure mounting and keeps flex to a minimum. This strengthens the link between crank and chainring, helping preserve crisp front shifts.Specific matching with the FC-RX820-2 crankset (31T-ND): This ensures correct alignment and spacing between the inner and outer ring. This supports accurate front-shift transitions and reduces mechanical noise.This chainring supports riders who want consistent shifting and strong drive efficiency on rough ground. Its pairing with the HG+ chain, rigid build, and precise fit all help maintain drivetrain control when the load varies across long rides.Choose this inner chainring if you want a reliable and durable replacement that keeps your FC-RX820 drivetrain running at its best. Its stable shifting and efficient power transfer make it a dependable upgrade for gravel use.Specification:Compatible chain: Shimano HG+ 12-speedSpeed: 12 SpeedDiscipline: Gravel & CyclocrossColour: BlackSize: 31 teethBolt Circle Diameter: 80mm