SLP Loudmouth I Exhaust - 2009-2013 Dodge Challenger R/T 5.7L Hemi D31029 for Sale

Price: $585

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SLP Loudmouth I Exhaust System - 2009+ Dodge Challenger R/T 5.7L Hemi

In Stock and Ready To Ship!

This sale is for SLP PT#D31029 which is Brand New in factory packaging!

This sale is for a new in box SLP Loudmouth I for the 2009+ Dodge Challenger with the 5.7L Hemi. For decades SLP has been known as a leader in developing high quality parts that make industry leading power gains. This new, full stainless steel catback exhaust continues on that reputation by adding a conservative 5-10 HP to your new LX! This part retails for $649.95+ shipping, so MarylandSpeed is excited to be able to offer it at this ultra low price with discounted shipping.

See Item Description Below for Other Details!

offer with confidence because MarylandSpeed is one of SLP's largest warehouse distributors, and we have been selling on for 10 years with positive response. Beyond , we also have a retail presence whose reputation is one of the best in the business. Quite simply, no other vendor can match us, and our reputation!

Call Us - 443-730-9428!

Product Information-

SLP PT# D31029

Now available from SLP is the Stainless Steel Modular Cat-Back Exhaust System for the 2009-13 Challenger 5.7L HEMI R/T. 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 3.0" 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. If upgrading to our Long Tube Headers use part #D30005 (Headers) Loud Mouth™ cat-back exhaust system for 5.7L R/T features:

  • Stainless Steel 3" Mandrel-Bent Tubing
  • Polished Loud Mouth II™ 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 (no welding required)
  • All Hardware and Installation Instructions are included
  • Covered by SLP's Performance Guarantee and Lifetime Warranty

Should you get a Loudmouth I or II?

SLP's Loudmouth I (the item offered in this sale) exhaust utilizes SLP's unique shotgun resonators offer a very loud muscular sound similar to many power boats out there. These mufflers are very high flow, but are also loud enough to get unwanted attention at times.

SLP's Loudmouth II exhaust utilizes a straight through bullet muffler, which produces a deeper, less raspy sound than the Loudmouth I. While the Loudmouth II is quieter and will comply with most noise pollution laws, it is still one of the louder exhausts you can buy.

Pictured: SLP PT# D31029

Payment Options-

We accept Visa, Mastercard, Discover, American Express, or Paypal

State Sales Tax-

Maryland residents must pay 6% sales tax.


All Parts are new and carry the Manufacturer's full warranty.


Shipping is via UPS Ground in the 48 State US, and includes Free Insurance!

UPS will get your product to you within 1-5 days of your order depending on how far you are from the East Coast.

AK and HI residents, please contact us for a shipping quote before ordering!

International Customers-

At this time we do not accept purchases from international customers, nor do we ship outside the United States.

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