This is the most complete, well-rounded power package around for the 991.2 GT3 4.0L. With careful consideration and many design, engineering and tuning hours, we have extracted impressive power, torque and drive-ability out of the 991.2 GT3 4.0L engine. The best part: no compromises. ...

Package Includes: Street Headers (w/ cats) Cobb AP w/ Pro Tune Dundon Resonance Intake Manifold w/ 100mm Throttle Body 997.1 Secondary Air Injection Retrofit (required for 997.2 cars) The Dundon Street headers by itself give a huge improvement to performance and the overall sound...

Package Includes: Street Headers (w/ cats) Cobb AP w/ Pro Tune 997 GT3 Intake Manifold w/ 93mm Throttle Body   The Dundon Street headers by itself give a huge improvement to performance and the overall sound of the system, combined with the Cobb AP...

Get the best sounding, most powerful exhaust for your GT4RS.  No compromises.  Over 3 years in development and 11 Prototypes to get it right.   Great Sound, and Great Power without drone!   We have spent the last TWO YEARS building, testing, iterating and improving...

Designed using Wind Tunnel Validated CFD and rigorously tested, the Dundon Complete Aero Package gives your 992 GT3 more downforce and the driver more confidence to go faster.Making the car faster and easier to drive fast: Take it from our customer, Amit P.  "I...