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

This valve is the largest displacement valve that Forge currently produce. The unique design features a 50mm (2”) aluminium piston (meaning no issues with split diaphragms). As we endeavour to continue our innovation, existing products are no exception. Therefore, we have now released the all new version of “FMDVRAY.” It has been difficult to improve upon this market leading design, but we have done just that. We run this valve on our very own Mk1 race car, that's how confident we are in the product!

Highlights:

Improved external aestheticsUtilising world leading Eibach springs for more precise operation and consistencyA myriad of incremental engineering enhancements to all internal components have been carried out to offer faster response times and longer service intervalsThe piston uses heat stabilised Viton O-ringsLubricated with high temperature Mobil1 grease to ensure a long life with minimal wear and very long service intervalsA super durable and responsive aluminium pistonA fully serviceable valve that is rebuildable in minutesAvailable in anodised black or anodised purple Ideal for custom installations using the aluminium weld on coupler and clamp providedCovered by the unique Forge Lifetime Warranty*

*Terms and conditions apply.

In the Box

1x FMDVRAYV21x Clamp-on Boss 1x V-Band Clamp1x Forge Motorsport Key Ring

The picture above illustrates the valve assembly, please note that only one shim can be used and how the shim fits between the piston and the spring