Supplied in 8mm thick Mild Steel (MS) or grade 304 Stainless Steel (SS).
Supplied with 32 , 35 or 38mm Holes as standard.
The complete intake/exhaust flange is supplied port matched to the stock head.
If you required different Size holes, please contact us
Also note: Some tuners bore fresh intake ports through the top of the head so they need exhaust flanges with full bolt holes adjacent to where the stock intake ports are. If you’re using a stock intake set up then you’ll need to slice the flanges through some of the bolt holes. We figure that if you’re capable of making a manifold you’re pretty handy with an angle grinder too!