250Cup 4-1 Manifold & De-Cat/Test Pipe
Some owners don't need a big catalyser, or another silencer (SDCP) - just best power/torque AND best sound!
This combination of stepped 4-1 manifold with a proper merged collector, fully TIG-welded connected to a plain/lightweight de-cat pipe is the best solution for Track or Race.
Only now that this firm - https://www.rrrengineering.co.uk/ has been working with a 2bular 260Cup client can we offer this pipe with no issues of CEL's/fuelling etc.
Independent testing showed the 2bular 2ZR 4-1 manifold performed best and
https://www.instagram.com/joetaylorracing/ proved it on the track!