Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$5,000 Giveaway. 5 Chances to Win! Enter Daily >

SLP Loudmouth Cat-Back Exhaust (99-04 GT, Mach 1)

Item 23001
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$0.00
Market Price $644.99 You Save 12% ($75.00)
Our Price

$569.99

FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

      Video Review & Installation

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation

      Features

      • Rich, Throaty Exhaust Tone
      • Loudmouth "Shotgun" Race Resonators Included
      • Versatile Modular Design
      • 2.5" 409 Stainless Steel Tubing
      • 3.5" Polished 304 Stainless Steel Tips
      • Fits 1999-2004 GT, Bullitt, & Mach 1 Mustangs

      Description

      More Power and Sound.   This SLP system includes SLP's infamous Loudmouth "shotgun" race resonators that offer virtually zero flow restriction to free up more power and to produce the most aggressive sound possible.

      Modular Design.   SLP's unique modular design allows you to quickly and easily switch out the mufflers or resonators to suit your driving needs. Along with the included resonators, the Loud Mouth system is compatible with all SLP mufflers and resonators including the bullet-type Loud Mouth II and the traditional-style PowerFlo Muffler.

      Superior SLP Construction.   This SLP Cat-Back system is made from mandrel bent 2.5" 409 stainless steel tubing for for its excellent non-restrictive flow characteristics and long life. The system ends with a brightly polished 304 stainless steel 3.5" tips, that are electro-marked with the distinctive SLP logo, giving a great finishing touch and a show quality look.

      Application.   Designed to be a direct bolt on, this SLP Loudmouth catback will bolt straight up to the factory Mid-Pipe without any extra modifications required on the 1999-2004 GT, 2001 Bullitt, or 2003-2004 Mach 1 Mustang to give it a rich, throaty sound.

      Fitment: 1999 2000 2001 2002 2003 2004 Details

      SLP M31007

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      Installation & What's in the Box

      Installation Info

      What's in the Box

      Hardware included:
      • (2) Intermediate Pipes
      • (2) Over-axle Pipes
      • (2) Resonators
      • (2) Tailpipes
      • (2) Tailpipe Tips
      • (8) Clamps
      • (2) Ball Flanges
      • Instructions

      Tech Specs

      Cat-Back Exhaust Specifications
      Piping Material: 409 Stainless Steel Tip Material : Polished 304 Stainless Steel
      Piping Size: 2.5" Tip Size: 3.5"
      Muffler Type: Straight-through Fitment: 1999-2004 GT / Mach 1 / Bullitt Mustangs
      4.9

      Customer Reviews (100+)

        Reviews of SLP Exhaust products have an average rating of 4.8 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

          • Bullitt - 01
          • GT - 99, 00, 01, 02, 03, 04
          • Mach 1 - 03, 04

          Fits GT, Mach 1, and Bullitt

              Related Mustang Categories