Borla - 05-06 GTO Stainless Steel Cat-Back + "X" pipe
BORLA Cat-Back™ exhausts feature patented, straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy and the distinctive BORLA Sound of Power respected by motoring enthusiasts everywhere.
Flowmaster Exhaust - 05-06 Pontiac GTO Axle-back System - Dual Rear Exit - Force II - Moderate Sound
These quieter sounding systems are designed to replace original rear mounted mufflers located behind the rear axle using factory style connections. With easy fit in mind, these systems are mandrel bent for maximum performance, include specially selected mufflers and all necessary parts and hardware for easy installation. Force II systems deliver a moderate exterior tone and moderate to mild interior tone, and are suited to customers looking for efficiency improvements without a lot of noise. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage.
Flowmaster Exhaust - 2004 Pontiac GTO 5.7L 2.50" Outlets, Cat-back System - Dual Rear Exit - American Thunder - Moderate Sound
For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster cat-back exhaust system provides. D.O.R. (Dual Out Rear) systems are the perfect choice. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their perfomance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.
Magnaflow - 04-06 Pontiac GTO - Direct Fit Catalytic Converter
V8 5.7L GAS; Front,Off Road Use Only, Direct Fit Catalytic Converter
Magnaflow - 04-06 Pontiac GTO - Stainless Performance Exhaust Cat-Back System
V8 5.7L GAS 2.5 in. Tubing, Tru-X Crossover Pipe, Rear Exit; 3 in Rolled Tips
SLP Performance - 05-06 GTO "Loud Mouth II" w/PowerFlo-X Crossover Pipe
Bolt on a Loud Mouth II™ modular catalyst-back exhaust system from SLP on your new 2005-06 GTO for up to 5 extra horsepower and 5 foot-pounds of torque with the aggressive muscle-car rumble your LS2 deserves. Not quite as loud as our original Loud Mouth™, the system’s great sound comes from a pair of stainless bullet mufflers complete with embossed SLP logo. Our engineers developed a great sound for the street without objectionable in-cabin resonance. The additional performance comes from the free-flow design and our built-in PowerFlo-X™ Crossover system that borrows a power-building technique widely used in stock car racing. The system features a pair of distinctive 3.5” dual-wall stainless steel tips that look great peeking out of the GTO’s rear valance. The tips have an angle cut and can angle downward in a traditional style, or rotated at a 90 degree angle so they match the curving shape of your rear valance. The modular design gives you flexibility to change to a louder system in minutes by purchasing a pair of bolt-in Loud Mouth™ resonators (#31062). The exhaust system is hand-crafted from 2.5” stainless steel, and is covered with our Limited Lifetime Warranty.
SLP Performance - 05-06 GTO Aluminum Ceramic Coated 1-3/4" Long-Tubes w/High-Flow Cats/Downpipes
Bolt these Long-Tube Headers on your 2005-06 GTO for a quick pick up of up to 15 horsepower and 17 foot pounds of torque. Your LS2 engine will really respond. Our engineers developed these headers to maximize power through the entire rpm range with 1 3/4 inch primaries flowing into 3-inch collectors and downpipes, then into our High-Flow Catalytic Converters (included). Use our new Loud Mouth™ (#31560) or Loud Mouth II™ (#31561) cat-back exhaust with integrated PowerFlo-X™ crossover for the most power and best sound possible from an exhaust system. Headers come with ceramic coating inside and out to cut down on heat transfer, increase exhaust gas velocity, and reduce under-hood temperatures. All necessary hardware, gaskets and clamps are included for an easy installation
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