SLP Modular Exhaust System, Loudmouth I - 2.5" Dual Dual Tips

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On Sale
Now: $331.96
Was: $399.95


SLP's F-Body cat-backs have always been the best-performing exhaust systems in the business. Now they're the most versatile, too! Using our industry-exclusive modular design architecture, we have developed a line of 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 you're done. No other exhaust offers this level of performance and adaptability!

Along with the included race muffler, the F-Body Loud Mouth system is compatible with our original Loud Mouth II bullet-type race muffler (#31067). Get both for complete control over your car's sound and performance characteristics.

NOTES: Includes Loud Mouth resonator. Loud Mouth II race mufflers sold separately.


  • Includes our infamous Loud Mouth resonator for virtually zero flow restriction and the meanest sound around
  • Employs SLP's exclusive modular technology, making it possible to switch between muffler and resonator types in a matter of minutes
  • Engineered and built to OEM standards to ensure proper fit
  • Constructed entirely from mandrel-bent stainless steel
  • Features a show-quality polished resonator and 2.5 Dual/Dual tips with electromarked SLP logo
  • For 1998-2002 LS1 F-Bodies

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Special Order Terms Notes

Special Terms:
This brand is special order, can take longer, and is not cancelable (Refer to order terms - ). If concerned about delivery time please contact us before purchase.
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1 Review

  • 5
    Customer review

    Posted by Tyler Glenn on 12th Sep 2010

    A very simple install but it yields fantastic results. Getting the first clamp off was a chore because it was basically super-glued to the pipe thanks to rust (common problem with exhausts) This system simply clamps on. Took me about 1.5 hours to get it done. The biggest issue I had with the install was the removal and positioning of the pipe section that goes over the rear axle. Apart from that and some meticulous tweaking of the positions of the tips the install flew by. One thing I would recommend for those of you getting this exhaust to replace the stock one would be to seek out a lift. this job was quite a chore using a jack and jack stands (the pipe going over the axle made sure of that)

    As far as sound goes, if you want to have people's necks snapping when they hear your exhaust, this is a pretty safe bet. Nice throaty rumble when the car idles but it roars when the car takes off
    (Note: take care around police because around where I live, cops go by the rule, "if they can hear your exhaust with their windows up, they will pull you over")
    Sure enough I encountered a police officer as soon as I exited the area I was working in. Luckily as long as you cruise at relatively low RPM's the exhaust isnt that loud. Just be careful out there_

    All in all a great product for the price. Looks good, sounds good, and is relatively easy to install

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