The Stealthback Exhaust for the 2013+ Hyundai Genesis Coupe 2.0T is a two (2) piece system consisting of the Front Pipe/O2 Housing...

The TurboXS RX8 High Flow Cat is a great alternative to running a completely catless exhaust. We use a 200 cell metal matrix cat for high...

The Lancer Ralliart High Flow Cat-pipe allows you to bolt on horsepower while keeping a catalytic converter on the car.?? Designed to be...

If you want performance gains for your 2015+ WRX BUT you want to keep a catalytic converter AND don't feel like dropping a ton of money,...

The Evolution X High Flow Cat-pipe allows you to bolt on horsepower while keeping a catalytic converter on the car.? Designed to be used...

High Flow Catalytic Converter Pipe for 2002-2007 Subaru WRX and STi.   Features include: 100 CPI High Flow Catalytic Converter All 304...

It's pretty easy to make a make a catless downpipe that makes power.  It's much harder to make a downpipe with a catalytic converter yet...