SLP 99-04 Cobra "Loud Mouth II" (modular) Exhaust System

SKU: SLP-M31006A

Manufacturer: SLP

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SLP 99-04 Cobra "Loud Mouth II" (modular) Exhaust System

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SLP 99-04 Cobra "Loud Mouth II" (modular) Exhaust System

The best-performing cat-backs in the business are now the most versatile, too! Using groundbreaking modular technology first seen on our Mustang X-pipes, weve developed a new line of exhaust systems that can be quickly reconfigured to fit changing performance, noise-level, and sound-quality requirements. Simply loosen a few band clamps, swap muffler types, retighten, and youre done. No other cat-back offers this level of performance and adaptability!

This system includes our all-new Loud Mouth II race mufflers, which combine flow characteristics similar to those of our original Loud Mouth resonators with a deeper tone and reduced resonance. Get both for complete control over your Cobras sound and performance characteristics.

NOTES: Includes Loud Mouth II race mufflers. Loud Mouth resonators (#31062) sold separately.


  • Provides up to 20 additional horsepower
  • Employs SLPs exclusive modular technology, making it possible to switch between muffler and resonator types in a matter of minutes
  • Includes our new Loud Mouth II race mufflers for superior flow, an ultra-aggressive tone, and minimal resonance
  • Engineered and built to OEM standards to ensure proper fit
  • Constructed entirely from mandrel-bent 304 stainless steel
  • Features show-quality polished resonators and 3.5" double-wall tips with electromarked SLP logo
  • For 1999-2004 SVT Cobra models
Manufacturer SLP

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  • SVT Cobra 1999,2000,2001,2003,2004