Helical Exhaust Valve 

Helical exhaust valves are the suppliers to the highest quality marques, including Lamborghini, McLaren, Ferrari.

These exhaust valves are the best possible option available and IWS are pleased to be able to offer these fantastic valves to the aftermarket & bespoke exhaust manufacturers.

We have access to the whole range and will be stocking all commonly used versions.

63mm stainless steel vacuum valve normally open.