Rapid Systems 4" into 3.5" Exhaust for XR6 Turbo

The system starts off with a 4inch dump pipe, with bell mouth section off the turbo for maximum flow and spool. The dump runs into a 5inch cat with 4inch inlet and outlet, so its a true 4inch dump & cat section, 4inch mid section runs back and merges to 3.5inch, where it goes into a straight through 3.5inch muffler. The muffler is hand picked and chosen from several mufflers that have been trialled as part of our ongoing R&D. Over the diff is 3.5inch piping, running into a 3.5inch stainless muffler chosen for its deep note and polished finish to look nice from the rear (can be black also), the tip is a 4inch stainless pipe, simple and effective. Rapid Systems Racing Products.

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