• Utilising world leading springs for more precise operation and consistency
• All internal and external components have been made in the UK
• Pistons use heat stabilised Viton O-rings
• Lubricated with high temperature Mobil1 grease
• Fully serviceable and rebuildable in minutes
• No check engine lights (EML)
• Covered by the unique Forge Lifetime Warranty*

Check the 'Compatible Vehicles' tab for confirmed fitments.

This has been designed by Forge Motorsport as a direct replacement for the compressor bypass valve (CBV) that bolts directly to the turbo. It replaces the OEM diaphragm type valve with a piston design that allows for tuning with interchangeable springs. For those running higher boost pressures after software tuning this really is a must to ensure that you do not lose boost through the valve. 

In The Box:
1 x FMDVRMR Valve
1 x Uprated Yellow Spring
1 x Uprated Blue Spring
3 x M6 x 16 Socket Cap Bolts
1 x Forge Sticker

This product comes assembled with a green spring but is supplied with an additional uprated yellow spring. If your car is a Renault Megane RS250, 265, or 275, then this spring should be fitted instead of the stock green spring. If you wish to further tune this product to fit the needs of your engine, please see the spring tuning kit here.

Replaces Saab OEM Part No. 55558627

⭐ Overall, a very nice piece of kit and very happy with it and also Forge's service! ⭐

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner

If you are unsure if this product is suitable for your application, please contact us. 

Complimentary Products