FC-RX820 12-Speed Single Chainset

Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world
The GRX series offers premium performance at an incredible value, with thoughtful ergonomic designs and gravel-centric gearing for all manners of unpaved adventures.

The RX820 series offers premium performance at an incredible value, with thoughtful ergonomic designs and gravel-centric gearing for all manners of unpaved adventures. 

Wide array of options delivers optimal gravel gearing for variety of riders

The SHIMANO FC-RX820-1 crank balances weight savings, optimized efficiency, and an array of gearing options that cater to the segmented demands of mixed-terrain riding.

• By pairing a 10-45T or 10-51T cassette with 40T and 42T chainrings, riders can choose closer gear steps or ultimate range.
• The FC-RX820-1 comes in 170, 172.5, and 175 mm crank arm lengths, providing an additional level of customization.

Features:

• Optimal gearing for mixed-terrain riding
• 10-45T and 10-51T cassette options serve array of riding styles
• 42T and 40T chainrings available

Product specification:

• MODEL NO: FC-RX820-1
  - SERIES: GRX 12-speed
  - Colour: Series colour
  - Average Weight: 644g (40T), 656g (42T)
  - Rear Speeds: 12
  - Compatible Chain: HG 12-speed
  - Chain Line (mm): 49.7
  - P.C.D. (mm): 110
  - Spider/Gear Arms: 4
  - Chainring Combination: 40T, 42T
  - Q-Factor (mm): 151
  - Crank Arm Length (mm): 170, 172.5, 175
  - HOLLOWTECH II
  - HOLLOWTECH Crank Arm
  - Compatible Bottom Bracket Type: Outboard
  - Recommended Bottom Bracket: Threaded (normal) - SM-BBR60, Press-Fit - SM-BB72
  - Threaded Bottom Bracket Shell Width (mm): 68, 70
  - Crank Fixing Screw Included

Does not include a bottom bracket