The Race Tech Shock Rebound Separator Valves replace OEM Shock Shaft Nuts with an asymmetric valve that provides more damping restriction on compression than rebound.

The Rebound Separator Valve works on both Dirt and Street applications.

On standard shocks, the Lo-Speed Rebound Adjuster flows the same for compression and rebound. With the stock setup, testing shows that when the lowest speed rebound damping is quick enough to get good traction, the lowest speed compression damping is way too mushy.

  • In Dirt the Rebound Separator Valve solves the vague feeling as well as bottoming on long duration hits like big dips or gullies.
  • For Pavement the Rebound Separator Valves have the added benefit of pitch control (front to back movement during acceleration and braking). This keeps geometry more consistent.

â–ºDirt Rider Magazine Test of the Rebound Separator Valve

Special thanks to Terry Hay of Austrailia's Shock Treatment for the design.


Race Tech Rebound Separator Valves

Part Number Thread and Stock Bleed Size
(bleed may be drilled)

SMRS 07075 M7x.75 - No Bleed
SMRS 0912500 M9x1.25 - No Bleed
SMRS 1212500 M12x1.25 - No Bleed
SMRS 1215000 M12x1.5 - No Bleed
SMRS 1215000Y M12x1.5 - Travel Limited YZ - No Bleed
SMRS 1610000 M16x1.0 - No Bleed
SMRS 1612500 M16x1.25 - No Bleed