Birchills Automotive manipulates tube far in excess of what the text book say, which is 20% from nominal bore.
We increase the nominal bore by up to 300%!
Can be used internally or externally to reduce / enlarge your pipe system both inside and outside the exhaust / muffler box or in combination with tailpipes / trims to give an acoustic style look to complement your existing trim work.
Produced in high quality 304 stainless steel for long-life. These components can be polished internally or externally depending on the numerous applications.
Components can be supplied with a mirror polished or satin finish.
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