Forge Motorsport Type RS Valve Recirculating 34mm Connector for Mitsubishi Evo VII VIII VIIII X

Brand New Genuine Forge Motorsport Performance Parts & Accessories

The Forge RS valve has been specifically designed and engineered, to offer extreme flow rate capability, where other valves are just not up to it. Often when engines have been tuned by installing larger turbos or even software upgrades improved turbo response can be achieved by fitting the RS valve which has the greater internal mass air flow specification utilising an amazing 50mm (2″) bore. For fine-tuning, there is a variable spring preload incorporated and a ratchet type top adjuster that will allow for the positive and precise adjustment that your driving style demands.

To ease installation. a 360-dee adjustable vacuum hose connector. With a choice of inlet and outlet connections, the RS valve can be matched to your engine perfectly. This valve incorporates a unique conical, progressive rate spring that can allow for the retention of boost pressure from 7 to 22 PSI depending on the individual user’s application and level of adjustment. If you are intending on running over 22psi then you will need the uprated spring, which is included in the kit.

This unique spring design will also allow for unrestricted piston travel and flow volume regardless of the amount of pre-load adjustment added to the spring. Other manufacturers valves using cylindrical springs with adjustable pre-load often experience restricted piston travel and flow volume within the normal range of valve adjustment.

Valve finish is polished silver or black. Please specify at checkout which finish you require.

In The Box:
1 x FMDVRSR Valve
1 x Uprated RS Spring
1 x Instructions
1 x Forge Sticker

We recommend all parts are fitted by a qualified mechanic to ensure the correct fitment, though this kit does include fitting instructions.

See our shop for other Forge products plus 1000s more Performance Parts