Suitable for VW 8v & 16v , Audi RS2 , Ford Kent , Mazda 2.0 16v FE3

Dual Valve Spring Set ( VW ) 

Competition Valve Springs and Retainers are a must if you are considering a Camshaft with High Lift and intend to run at High Rpm.

The STK Dual Valve Spring set will eliminate coil bind and valve float when installed correctly and is made from High Quality Chrome Silicone and rated at 9000rpm and are suitable up to 13,5mm of Cam Lift with a 185 lbs pressure. ( a standard Valve Spring has around 80 lbs pressure )

The STK Dual Spring Kit is Complimented with a Strong , Lightweight Valve Spring Retainer which is made from Chromoly 4140 & a set of 3 groove cotters for 7mm valves.

Installation of the STK Dual Valve Spring

1. Do not use the standard steel pressed lower spring retainer with these springs , a 1mm flat washer or spacer should be used to protect the cylinder head seat area.

2. The Inner and Outer spring should be flush on the bottom 1mm spacer , therefore do not space the inner spring to the same free height as the outer spring as this will cause breakage or failure.

3. Have the Spring Heights and Spring Travel Measured accurately to avoid coil bind ,breakage or damage to the camshaft lobes.

4. Allow an Automotive Engineering Specialist or a Master Mechanic to instal these springs correctly 'cause if you get it wrong it's gonna hurt your pocket ! 

Modification of the Cylinder Head maybe necessary in order to ensure reliability when fitting the Dual Spring Set , so ensure that a Master Mechanic fits these products to avoid damage to the camshafts, valve train and engine.

Single Valve Spring Set ( VW ) 

For the everyday driver who wants a bit more out of the engine with a High Lift Camshaft and rev's beyond the standard rev limiter.

The Single Valve Spring Set is Suitable for use up to 7500rpm & can be used as direct replacement parts.

The Single Valve Spring Set is Complimented with  a Strong , Lightweight Valve Spring Retainer made from Chromoly 4140 & a set of 3 groove cotters for 7mm valves.

What Valve Spring is right for your application ?

Keep in mind that Motorsport Companies do not use standard valve springs in their “state of the art“ Cylinder Heads, have you ever wondered WHY?

The standard valve spring is designed for a production vehicle which is generally well looked after at a moderate rpm.

Whereas a competition engine is designed to run at maximum rpm whether it be 8 000rpm or 10 000rpm and not to chug around the streets, they need reliability and components that can handle the pounding from the high lift, high duration Camshafts they use.

With this in mind a Cylinder Head or Engine will be destroyed due to incorrect installation or incorrect valve spring applications due to valve float and coil bind.

So, when you decide to build a trick head ensure you do your homework thoroughly and get expert advice.

STK Valve Spring Kits are suitable for most Volkswagen 8V & 16V applications as well as Combi & Audi 5 Cylinder.

Suitable as a replacement for the Audi RS2.

Suitable as an upgrade for the Ford Kent Cylinder Head.