Tomei Expreme Ti Titanium Catback Exhaust System - Fits Subaru 02-07 WRX / 04-07 STI subaru-wrx-2013 and where the factory inlet/outlet

and where the factory inlet/outlet locations eliminate the option for a proper N-FLO design

which features increased filtration surface area compared to the stock paper filter

Set the shifter throw and knob height to your personal preference

Tip Outlet Diameter: 4" (101

With more boost comes the stock intercooler unit quickly gets in over its head

Tomei Expreme Ti Titanium Catback Exhaust System - Fits Subaru 02-07 WRX / 04-07 STI subaru-wrx-2013 and where the factory inlet/outletTomei Expreme Titanium Cat Back Exhaust System; for those of you looking to add performance by losing weight and adding horsepower! This exhaust system has been fully fabricated from lightweight titanium and provides substantial weight savings for your 2002 2007 Subaru WRX STI! This exhaust system has been designed with minimal bends to reduce exhaust turbulence under acceleration which improves throttle response and adds both horsepower and torque.