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RPI Designs, located
Salem, Ohio, offers many c5/c6/ c7 corvette Stingray



Use Coupon Code SAVE for savings!


C5/C6/C7 Corvette Stingray Parts & Accessories, 2010-2015 Camaro, 2016-2018 6th Generation Camaro and 2015-2018 Ford Mustang

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Challenger R/T SLP Loudmouth Exhaust 2008-2013 - RPIDesigns.com
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Challenger R/T SLP Loudmouth Exhaust 2008-2013
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Challenger R/T SLP Loudmouth Exhaust 2008-2013
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Challenger SLP Loudmouth Exhaust system. 

Now available from SLP is the stainless steel, Catalyst-Back Modular Exhaust System for the 5.7L 2008-2009 Challenger. It is available in Loud Mouth™, Loud Mouth II™ and PowerFlo designs. Thanks to the modular design, either resonators or mufflers can be ordered individually and interchanged separately.

These systems provide a noticeable performance gain of up to 12 horsepower and are designed using SLP's innovative modular technology. This enables customers the flexibility to change the performance and noise-level characteristics by switching from our bullet-style Loud Mouth™ resonators, to our quieter Loud Mouth II™ mufflers, or for that more civil muscular sound the PowerFlo mufflers in order to suit their individual requirements (cutting of rear pipes is needed to switch from the Loud Mouth Series to the PowerFlo Series).

Each system is constructed from 3" stainless steel mandrel-bent tubing, for unrestricted flow with an integrated 3" PowerFlo-X™ Crossover Pipe that will bolt to the factory 2.5" down pipes. Re-Use your factory Challenger Square Exhaust Tips. Easy bolt-on installation and all hardware and installation instructions are included, backed by SLP's Lifetime Warranty.

NOTE: Designed to work with STOCK exhaust manifolds.

Loud Mouth™ catalyst-back exhaust system for 5.7L features:

  • Stainless Steel, 3" mandrel-bent tubing
  • Polished Loud Mouth ™ mufflers w/SLP's logo embossed in the body
  • Integrated PowerFlo-X™ Crossover Pipe w/2.5" Inlet
  • Factory Style Ball-Band Clamps included to re-use factory Challenger Tips
  • Easy, bolt-on installation and SLP's lifetime warranty
  • All hardware and installation instructions are included

No discounts can be taken on SLP products. The price shown in our lowest price available.


A very popular modification is Challenger R/T SLP Loudmouth Exhaust 2008-2013
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RPI Designs
11800 Salem Warren Road
Salem, Ohio 44460

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