Mazdaspeed downpipe/catalytic converter upgrade

Replace the restrictive and heavy downpipe on your Mazdaspeed with this 2.5″ stainless steel version. When combined with our Mazdaspeed exhaust, it offers noticeably faster spoolup and a good increase in power. We measured a 23 hp and 26 lb-ft increase on our dyno. If Mazda had delivered the car like this from the factory there would be a lot less interest in aftermarket upgrades! An extremely popular upgrade for Mazdaspeeds.

Beautifully made out of stainless steel with polished flanges, this is a long-lived upgrade. So long that we offer it with a lifetime warranty. It`s also 7.2 lbs lighter than stock as an extra bonus.

As with all of our catalytic converters, this cat is emissions-certified. Specifically, it’s EPA-approved for this application. Please note that these are not CARB legal and we cannot ship them to California. They’re also not legal in states requiring CARB cats. That’s California, Colorado, New York, and Maine.

5 year/50,000 mile warranty on the catalytic converter body, the internals (and ability to pass an emissions test) are covered for 25,000 miles, everything else is covered for life. Fits the Mazdaspeed with stock turbo only.