A Universal Twin Piston Blow Off Valve with a Weld on Adaptor


Code: FMDVWO34

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

This twin Piston Blow off Valve is specifically designed for those that wish to install the valve by welding direct to a hard pipe installation, intake manifold, intercooler or similar. Available with a 25mm or 34mm adaptor which screws to the valve.

Please select the adaptor required from the options above.


In The Box:
1 x FMDVWO25 or 34 Valve
1 x Adaptor (Aluminium or Stainless Steel)
1 x Uprated Blue Spring
1 x Uprated Red Spring
1 x Forge Sticker

If you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.


  • Universal
    • Universal Application - Please Contact Us If You Are Unsure Whether This Product Is Suitable