Product Description
United in Gravel! With a clear focus on the heart and soul of
gravel biking, SHIMANO’s mechanical GRX series now gets a 12-speed update to deliver top performance!
Simplicity and reliability are the foundation for the new 12-speed GRX range, allowing you to enjoy special off-road adventures!
Especially with the GRX FC-RX820 1-speed cranksets, SHIMANO’s developers pay close attention to the requirements of modern cross, gravel and commuter bikes.
That’s because the bottom bracket offers a balance between weight savings, optimized efficiency and a range of gearing options to meet the various demands of mixed-terrain riding. By combining a 10-45 or 10-51 tooth cassette, a smaller gear ratio or a smaller maximum range can be selected as desired.
Details:
• Crankset for SHIMANO 12-speed gravel/cross drivetrains
• Two-piece Hollowtech II design with integrated axle
• Hollow-forged aluminium crank arms
• 4-arm construction for efficient power transmission
Technical data:
• Application: Gravel, Road, Cyclocross
• Series: GRX
• Model: FC-RX820-1
• Crank arm material: aluminium, hollow forged
• Chainring material: aluminium/composite (large), aluminium (small)
• Gears: 12-speed/single
• Axle: integrated (Hollowtech II)
• For bottom bracket shell width: 68 / 70 mm (for threaded bottom brackets)
• BCD: 110 mm / 80 mm (asymmetrical)
• Chainline: 49.7 mm
• Q-factor: 151 mm
• Weight: approx. 656 g
Available in:
• 42 teeth