GRX CRANKSET - 1X12s

FC-RX820-1

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.

BENEFIT

• Optimal gearing for mixed-terrain riding
• 42T and 40T chainrings available

FEATURE

• 10-45T and 10-51T cassette options serve array of riding styles

PRODUCT SPECIFICATION

• Model No: FC-RX820-1
• Series: GRX
• 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:
  • 170: ✔
  • 172.5: ✔
  • 175: ✔
• Optional Chain Guard:
  • Without chain/bash guard: ✔
• HOLLOWTECH II: ✔
• HOLLOWTECH Crank Arm: ✔
• Compatibly Bottom Bracket Type:
  • Outboard: ✔
• Recommended Bottom Bracket Type:
  • Threaded (normal): SM-BBR60
  • Press-Fit: SM-BB72
• Threaded Bottom Bracket Shell (width):
  • 68: ✔
  • 70: ✔
• Crank fixing screw included: ✔
• Average weight: 644 (40T) 656 (42T)
• Color: Series color

FEATURED TECHNOLOGY