The Shimano GRX chainset is purpose-built for gravel riding, combining rugged durability, optimised gearing, and efficient power transfer for mixed-terrain adventures. Designed as part of Shimano's dedicated GRX groupset, it delivers smooth performance across roads, gravel tracks, and challenging off-road routes.

Featuring a 48/31T double chainring configuration, the chainset provides a versatile gear range suitable for steep climbs, fast road sections, and long-distance riding. Shimano's Hollowtech II construction ensures an excellent balance of stiffness, strength, and low weight, helping maximise pedalling efficiency on varied terrain.

Constructed with anodised aluminium crank arms and lightweight aluminium chainrings, the GRX chainset is designed to withstand demanding riding conditions while maintaining reliable drivetrain performance. It is fully compatible with Shimano 12-speed Hyperglide+ chains for smooth and precise shifting.

Key Features

• Designed specifically for gravel riding
• Shimano GRX gravel-focused drivetrain technology
• 48/31T double chainring configuration
• Wide-ranging gearing for mixed terrain
• Hollowtech II construction for efficient power transfer
• Lightweight and durable aluminium construction
• Smooth shifting performance with 12-speed drivetrains
• Compatible with Shimano Hyperglide+ chains
• Suitable for gravel, adventure, endurance, and road cycling
• Four-arm chainring design

Specifications

• Brand: Shimano
• Series: GRX
• Type: Chainset
• Speed Compatibility: 12-Speed
• Chainring Sizes: 48T / 31T
• Crank Length: 175 mm
• Construction: Hollowtech II
• Chain Compatibility: Shimano Hyperglide+ 12-Speed
• Crank Arm Material: Anodised Aluminium
• Chainring Material: Aluminium
• Bolt Circle Diameter (BCD): 110 mm
• Chainring Design: 4-Arm
• Colour: Grey
• Intended Use: Gravel, Adventure, Endurance and Road Cycling
• Model Year: 2026