RoadsterSport Premium 304 Stainless Midpipe

RoadsterSport Premium 304 Stainless Midpipe

Regular price$799.00
Shipping calculated at checkout.

  • Free Shipping available within the US!
  •  Licensed Authorized Dealer

Includes our Made In America All Stainless Steel Lifetime Warranty
Roadstersport 304 stainless midpipe. Folks asked us to update our midpipe offerings to include 304 stainless, which we were previously missing, but now we have it! Carries over popular features from MaxMidpipe including big 5 inch body converter for max flow and longevity and extra large resonator for best rasp control.

We have the ONLY full 5 inch diameter body ultra highflow 200 CPI converter, with 2.5 inch diameter piping end to end ND Midpipes on the market. Most other choices on the market are 4 inch body cats, this 5 inch body design flows massively better. The math tells you the big news here: area of a 4 inch circle is 12.6 square inches, area of a 5 inch circle is 19.63 square inches, which means our 5 inch body Converter flows nearly 60% better than a 4 inch design!

INCLUDES O2 SENSOR CONNECTION AFTER CONVERTER which means you are ready to add a performance header (relocating the factory second O2 sensor after the converter in this midpipe to help avoid codes.).

Despite very large resonator, this midpipe will raise the final sound level because of the much higher flow.

SORRY, NOT CARB APPROVED FOR CALIFORNIA RESIDENTS, WE CANNOT SHIP TO A CALIFORNIA ADDRESS. CARB NOTICE: Not CARB approved (and therefore legal in California for off road use only). Note that there are states in addition to California that now follow the California model and require CARB compliance, please check the rules of your state before ordering, in some states this setup is legal only for race cars and may never be used on public highway. Sorry, we will not ship these to residents of California.


INSTRUCTIONS....see installation instructions in our forum in the Instructions Section, RoadsterSport Midpipe install page 4 and beyond...and note this unit is plug and play on Manual Transmission cars, we have NOT fit it to Automatic cars.

All install hardware is included. Note that in going to this midpipe you get a standard flat gasket and a pair of nuts and bolts for the connection to any of our RoadsterSport mufflers so we can convert from the factory leak prone gasket and spring setup to a standard flat flange to flat flange setup. And we add the dedicated flex joint to take over the job that the factory springs and round gasket were doing before. So, you will not use the factory gasket again, and will not use the spring/bolt factory bits. The factory setup was trying to do two jobs at once, handle flex with a gasket and spring setup that had one side round and springs to keep it reasonably flush, and that setup was not great at either the prevention of exhaust gasses escaping or the flex needs for very aggressive driving. The dedicated flex joint we built into the setup is a much more complete and effective setup for handling the most aggressive driving. For the connection between header and midpipe you reuse the factory hardware.

NOT designed to fit up to the factory muffler. We know that some folks have done it, but we do not recommend it as it would require at minimum some creative solutions for the hardware and the gasket seal, and it would likely still be prone to leaking, and doesn't make sense anyways to have the high flow benefits of the midpipe and header upstream all get thrown away by putting the small diameter restrictive stock muffler behind it.

Brian's Installation Tips: Adjust it too long at slip joint and it will hang too low and bang braces, make it too short at the slip joint in the middle and it will sit too high and tap the differential housing. For these reasons, a professional muffler shop install may be required. Spray a little soap and water on the slip joint between two halves of the midpipe so you can smoothly play with that length and alignment of both ends. You can spend 20 minutes on the first try and not have it right, or spend more time and get it right, we suggest more time up front to make sure you have no points of contact (grab finished install and yank in all directions to see if hit taps anything, adjust again if it does).

Warranty note on the converter: warranty covers defective converter only. But you can burn up a cat with abnormally high exhaust gas temperatures from track use, supercharger, aftermarket ECU tune, ignition system failure causing a rich mixture, and more. Warranty does NOT cover damage to the cat from these external variables. A failed cat must be sent to the factory for inspection before it can be determined if it is covered under warranty or not.

Recently viewed