Shimano GRX RD-RX820 Rear Derailleur - 12-Speed Direct Mount One Spec Shadow Plus Design 36t Max Low Weight-733 (mm) 52 Thickness 6

(mm) 52 Thickness 6

Risers cannot be stacked

Color Neon Green Pedal Type Platform Weight 350 Pedal Spindle 9/16" Pedal Body Material Composite Spindle Material Chromoly Steel Defined Color Green

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Shimano GRX RD-RX820 Rear Derailleur - 12-Speed Direct Mount One Spec Shadow Plus Design 36t Max Low Weight-733 (mm) 52 Thickness 6Shimano GRX RD RX820 Rear Derailleur 12 Speed Direct Mount One Spec Shadow Plus Design 36t Max Low. The Shimano RD RX820 rear derailleur is compatible with 11 34t and 11 36t 12 speed cassettes providing a wide gear range so you can spin a comfortable cadence no matter the terrain type. This rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. The chain