The APEXi N1 ExTi (Expert Titanium) catback exhaust system was built for quick throttle response and to effectively handle the rigorous demands of high horse power engines. This catback exhaust continues the legacy of the original N1 system and was originally only available in Japan as the N1 Titan. Fortunately APEXi has decided to offer this exhaust in the US under its new name, the APEXi N1 ExTi.

Each APEXi N1 ExTi exhaust utilizes full stainless steel piping attached to an exceptionally built full light weight titanium muffler section. Exhaust gas exits through a 115mm heat treated exhaust tip which can be extended or retracted to meet the dimensions of the rear bumper. There are 5 levels of length adjustments, designed to meet the needs of the car enthusiasts with aero kits installed.

APEXi exhaust engineers have spent many hours developing the N1 ExTi system. They have analyzed every aspect of the system, including CAD design, materials, welding quality, exhaust gas dynamics, engine compatibility and real world use. All APEXi exhausts meet applicable emission standards and don’t require a CARB Executive Order since they are considered direct replacement parts. All mounting positions and emission control devices have been retained.

APEXi N1 ExTi Catback Exhaust Features:
- Full stainless steel piping
- Light weight titanium muffler section
- Adjustable 115mm heat treated tip.
- Meets all emission standards

Reference: APEXi N1 ExTi Catback Exhaust, APEXi N1 Titan Catback, APEXi N1 Expert Titanium Exhaust

Product Notes:

Application: APEXi N1 ExTi (Expert Titanium) Catback Exhaust Subaru Impreza WRX / Sti / Wagon 2002-2007

Pipe size: 65mm-80mm
Tip size: 115mm