Shimano GRX RD-RX820 Rear Derailleur - 12-Speed Direct Mount One Spec Shadow Plus Design 36t Max Low MPFN-18976-06 BB Included No Bore 19

BB Included No Bore 19 Chainrings Included No Color Matte Black Crank Arm Material Steel Crank Intended Use BMX Crank Length (mm) 170 Crankset Style 3-Piece Defined Color Black Drive Side Compatibility Right and Left Hand Drive Pedal Spindle 9/16" Weight (oz) 35

Chainline/Hub Compatibility 135/142 MTB Hubs Chainline/Hub Compatibility 141/148 Boost Hubs Color Black/Silver Defined Color Black Defined Color Silver Direct Mount Type Direct Mount SRAM Drivetrain Speeds 12 Material Aluminum Offset 3 Ring Position/Type Chain Retaining Single Ring Round or Oval Round Tooth Count 38

Color Olive Green Defined Color Green Fabric Weight Light Finger Style Full Finger Gender/Age Unisex Insulation Type None Padding None Season Warm Weather Size Large Activity Cycling

The derailleur is smart enough to protect itself thanks to its incredibly resilient Overload Clutch

Spring Weight 550

Shimano GRX RD-RX820 Rear Derailleur - 12-Speed Direct Mount One Spec Shadow Plus Design 36t Max Low MPFN-18976-06 BB Included No Bore 19Shimano 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