Looking for the ultimate GTO cat-back system? Lethal Performance introduces SLP's new GTO Loud Mouth employs an integral X-pipe crossover and specially designed "Shotgun" race resonators to provide superior flow and performance, while minimizing interior drone. The resulting tone is deep, rich, and powerful--the consummate fusion of muscle-car aggression and grand-touring civility. Like all SLP exhaust systems, the GTO Loud Mouth is hand-built from 100 percent stainless steel and carries a limited lifetime warranty.
Features
Constructed entirely from mandrel-bent 304 stainless steel (2.5" OD)
Equipped with an integral X-pipe crossover for optimum performance and sound quality
Custom-designed "Shotgun" race resonators provide virtually unrestricted exhaust flow
Exclusive modular design allows easy interchangeability between resonators and SLP high-flow mufflers
Features two hand-polished, double-wall tips
Designed to OEM standards of fit and durability
Covered by our limited lifetime warranty
Priced significantly less than competitors' stainless systems
2004 GTO CNC Mandrel bent Everlast 3" 304 s/s exhaust system. Bolts to factory flanges behind the catalytic converter with dual straight through chambered-round mufflers and 3" x pipe. Exits in factory valence opening with single wide oval tip. All hangers and clamps included.Learn More
2004 GTO CNC Mandrel bent Everlast 3" 304 s/s exhaust system. Bolts to factory flanges behind the catalytic converter with dual straight through chambered mufflers and 3" x pipe. Exits on both sides behind rear tires with 64-65 style splitter tips with 3" outlets. Requires filling rear bumper opening. All hangers and clamps included.Learn More
A Modular Exhaust System to Wake Up Your 2005 GTO!
Bolt on a Loud Mouth modular catalyst-back exhaust system from SLP on your new 2005 GTO for up to 5 extra horsepower and 5 foot-pounds of torque with the aggressive musclecar rumble your LS2 deserves. The secret to the systems distinctive sound is a pair of stainless Loud Mouth resonators, stamped with our SLP logo. The additional performance comes from the free-flow design and our built-in PowerFlo-X Crossover system that borrows a power-building method used in stock car racing. The system features a pair of attractive 3.5 dual-wall stainless steel tips that look great peeking out of the GTOs rear valence. The tips have an angle cut and can angle downward in a traditional style, or rotated 90 degrees so they match the curving shape of your rear valence. The modular design gives you flexibility to change to a quieter Loud Mouth II system in minutes by purchasing a pair of bolt-in Loud Mouth II bullet-style mufflers (#31063). The exhaust system is hand-crafted from 2.5 304 stainless steel, and is covered with our Limited Lifetime Warranty.
Loud Mouth catalyst-back exhaust system for 2005 GTO features:
Limited Lifetime Warranty
Aggressive musclecar rumble, louder than our Loud Mouth II system (#31561)
Modular design lets you bolt-in a pair of Loud Mouth II mufflers (#31063, not included) for a quieter system
Hand-crafted from 304 stainless
Easy bolt-on that mounts to SLPs header system or stock exhaust
Distinctive stainless tips that rotate for the look you want