Shimano GRX RX820 12 Spd Crankset

UNBEATABLE CRANKS FOR UNSTOPPABLE BIKES
The Shimano GRX FC-RX820 1x 12-Speed Crankset is the powerhouse of your gravel drivetrain, whether you're building for race-ready speed or trailblazing range.

Riders who love going for personal PRs or duking it out at the sharp end of a race will appreciate the gear steps of the RX820 1x12 UNBEATABLE setup, paired with a 10-45 cassette and RD-RX822-GS medium cage rear derailleur. Just like its 11-speed predecessor, RX820 delivers smooth, reliable shifting but now features a wider gear range and extra cog, making it easier to find the optimal cadence for maintaining your position in the pack.

For all-day—or multi-day—adventures heavy on climbing, the new RX820 1x12 UNSTOPPABLE option, add SHIMANO's wide-range, 10-51T cassette along with the RD-RX822-GSG long-cage rear derailleur. This setup delivers optimal climbing gears for the steepest jeep roads or high mountain ascents.

THE NEXT GENERATION OF GRAVEL
With the introduction of Shimano GRX RX820 12-speed mechanical components, SHIMANO continues its legacy of innovation as the originator of gravel-specific components. Rooted in simplicity, reliability, and adventure, the new 12-speed GRX lineup delivers more gearing options along with unrivaled ergonomics so riders get the most out each unpaved adventure, wherever that might be. With a focus on the heart and soul of gravel cycling, Shimano mechanical GRX receives this 12-speed upgrade delivering top-tier performance without an over-the-top price. And since gravel is all about personal expression and freedom to choose how and where to ride, Shimano GRX includes three unique 12-speed mechanical drivetrain personalities to cover the full spectrum of riders and rides.

FEATURES:

• 1x12-speed gearing
• Crank arm length: 170 mm, 172.5 mm, 175 mm
• Chainring options: 40T, 42T
• SHIMANO HOLLOWTECH II construction
• 655 grams (172.5 with 40t chainring)

SPECIFICATIONS:

• Intended Discipline: Gravel
• Spindle Diameter: 24mm (Shimano)
• Bottom Bracket Included: No
• Pedal Spindle: 9/16"
• Chainrings Included: Yes
• Chainring BCD: 110mm Shimano Asymmetric
• Chainring Mount: 4-Bolt
• Chainline: 49.7mm
• Drive Type: 1x
• Speed Compatibility: 12 Speed
• Chainring Material: Aluminum
• Crankarm Material: Aluminum
• Color: Black
• Weight: 655g (172.5mm | 40T)