A Modular Exhaust System to Wake Up Your 2005
GTO!
Bolt on a Loud Mouth® II 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. 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 valence. 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 valence. 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” 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, 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 304 stainless
Easy bolt-on that mounts to SLP’s header system or stock exhaust
Distinctive stainless tips that rotate for the look you want
SLP Exhaust Types:
Model
Type
Sound Characteristics*
Noise Level*
Bullet-Type Open Resonator (or muffler delete)
Extremely aggressive; powerful high- and mid-range tones with
moderate resonance
Muffling, Bullet- Type Resonator
Similar to original Loud Mouth, but with a throatier tone and reduced
resonance
Straight-Through "Traditional" Muffler
Deep, rich, and mellow; minimal resonance
*
Volume and sound quality will vary based on engine and exhaust-system
specifications. Loudmouth also refers to some systems without any resonators such as the 2010 Camaro Loud Mouth and the 2005 Mustang Loud Mouth Axle backs where the mufflers are removed altogether. Images below are representations in order to better understand the differences.
* Please note that there is a shipping discount on multiple items in the same order(excludes oversized items). The shipping amount here reflects a 1 item/part purchase. Shipping price reflects shipping within the contential US. All other locations extra.
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