Exhaust System, 2005-06 GTO "Loud Mouth II" w/PowerFlo-X Crossover Pipe

A Modular Exhaust System to Wake Up Your 2005-06 GTO!

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.

Loud Mouth™ catalyst-back exhaust system for 2005-06 GTO features:

• Limited Lifetime Warranty
• Aggressive musclecar rumble, not as loud as our Loud Mouth™ system (#31560)
• Modular design lets you bolt-in a pair of Loud Mouth™ resonators (#31062, not included) for a louder system
• Hand-crafted from stainless
• Easy bolt-on that mounts to SLP’s header system or stock exhaust
• Distinctive stainless tips that rotate for the look you want