OUR Design and Quality

Classicfabs uses the latest in CAD software to design all its systems and components

Our systems are designed and manufactured to achieve the following.

  • The highest quality available.

  • The most efficient operation.

  • The most aesthetically pleasing.


Quality is achieved by Classicfabs operating a ‘Documented’ quality system based on ISO 9001. This includes design, compliance, and auditing systems.

Efficient Operation

We believe that our manifolds and systems are the most efficient available, for a number of reasons.

  • The manifold flange itself is a completely unique design, with specially designed tooling to enable it to be welded internally, with the internal rectangular ports the exact size of the cylinder head exhaust ports.

  • The collector that we use on all our systems, which is a unique ‘one piece’ unit, is fabricated again with specially designed tooling, which enables us to have all three outlets to enter it ‘in parallel’ , thereby producing what is called ‘Laminar’ Flow. (Limited turbulence) which is more efficient than other collection systems on offer.

  • All the bends are ‘Mandrel Bent’


All our systems, including any bespoke systems, are designed as roughly sketched ideas with dimensions. These initial designs are then converted to ‘Approved Designs’ using ‘Three dimensional’ Computer Aided Design. We use 3D ‘Solid Works’ modelling to confirm that the design we want will be :

  • The most pleasing.

  • The most efficient, for what we are trying to achieve.

  • And most importantly, we will be able to manufacture it from one piece of tubing from manifold to collector.