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



Coupon SAVE to save now!


C5/C6/C7/C8 Corvette Stingray Parts & Accessories, 2010-2015 Camaro, 2016-2019 6th Generation Camaro and 2015-2019 Ford Mustang

Painted Parts are painted to order and take additional time, right now we are about a 4-5 week lead time. Please keep this in mind.

2008-2013 Challenger R/T SLP Loudmouth II Exhaust  - RPIDesigns.com
Item Details
2008-2013 Challenger R/T SLP Loudmouth II Exhaust
Item Name:
2008-2013 Challenger R/T SLP Loudmouth II Exhaust
Item #:
Custom 1
Average Rating:

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2008-2013 Challenger R/T SLP Loudmouth II Exhaust  

Now available from SLP is the stainless steel, Catalyst-Back Modular Exhaust System for the 5.7L 2008-2013 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 II™ mufflers, to our louder Loud Mouth™ resonators or our more civil but muscular sounding PowerFlo system (cutting of rear pipes would be needed) in order to suit their individual requirements.

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" downpipes. 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 II™ catalyst-back exhaust system for 5.7L features:
  • Stainless Steel, 3" mandrel-bent tubing
  • Polished Loud Mouth II ™ mufflers w/SLP's logo embossed on 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 is shown in our lowest price available.

 Fitment:  2008, 2009, 2010, 2011, 2012, 2013  Dodge Challenger

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

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