Sram – GXDH 7-Speed Medium Cage Black A3 Rear Derailleur

We understand that the gnarly line requires a lot more focus than a lap of the supermarket.


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 That’s why we packed the GX DH 1x X-HORIZON rear derailleur with World Championship-winning features, and gave it a price tag that speaks more to the Wednesday Night Championships.This is a DH derailleur that is easier to shift, is incredibly precise and keeps the unwanted noise of chain slap to a minimum, so you can concentrate on the sweet feeling of nailing your line. GX DH – Get Some.

  • The GX 1x X-HORIZON Rear Derailleur is an integral part of the SRAM 1x DH drivetrain system
  • This is the most affordable full-featured, dedicated 1x DH rear derailleur in the industry
  • X-ACTUATION for precise and dependable 7-speed performance
  • Fully compatible with the SRAM X01 DH drivetrain
  • X-HORIZON design that reduces shift force, ghost shifting and cage slap
  • 12-tooth X-SYNC pulley wheels
  • Speed (RD): 7s
  • Cable pull ratio: Exact actuation
  • Cage (RD) Medium
  • Max tooth: 28
  • Colour (RD): Black
  • Pulley bearings material: Steel
  • Cage material (RD): Aluminium

SRAM part reference

RDR8129000 = 00.7518.129.000

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