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SLP

SLP 2011-2014 Ford Mustang 5.0/5.4L LoudMouth Axle-Back Exhaust w/ 4in Tips

$499.99 $422.22 Save $77.77

SKU: S007 M31023

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Special Order
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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

This SLP Loudmouth Axle-Back Exhaust system for the Ford Mustang GT, Boss 302, and GT500 eliminates restrictive stock mufflers for enhanced power and a "mind-blowing" performance sound. It features mandrel-bent 2.5" stainless steel tubing, is lighter than OEM, and includes hand-polished 4" dual-wall tips. Installation is quick, taking less than an hour, and all necessary hardware is included. The product is emissions legal in all 50 states and comes with SLP's Performance Guarantee and limited lifetime warranty.
Show original supplier description

Part #: M31023

Axle-Back Exhaust, 2011-14 Mustang GT/2012-13 Boss 302/2011-12 GT 500 "LoudMouth" w/4" Tips

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandSLP
Part NumberS007 M31023

Videos

2015-2017 Mustang GT SLP Exhaust Sound Clip Loudmouth II Axle-back Exhaust Review & Install

2015-2017 Mustang GT SLP Exhaust Sound Clip Loudmouth II Axle-back Exhaust Review & Install
2015-2017 Mustang GT SLP Exhaust Sound Clip Loudmouth Muffler Delete Axle-Back Review

2015-2017 Mustang GT SLP Exhaust Sound Clip Loudmouth Muffler Delete Axle-Back Review
SLP LOUDMOUTH 1

SLP LOUDMOUTH 1
My First Mod: SLP Loudmouth Axle Back Exhaust

My First Mod: SLP Loudmouth Axle Back Exhaust
SLP Loudmouth Axel-Back Exhaust Install

SLP Loudmouth Axel-Back Exhaust Install
2008 Mustang GT - SLP Loudmouth Axle Back Exhaust

2008 Mustang GT - SLP Loudmouth Axle Back Exhaust
2006 Mustang Gt - SLP Loud Mouth Axle Back Exhaust!! (install) *LOUD POPS*

2006 Mustang Gt - SLP Loud Mouth Axle Back Exhaust!! (install) *LOUD POPS*
2011-2014 Mustang SLP Exhaust Sound Clip Loudmouth Axle-Back (GT, GT500) Review

2011-2014 Mustang SLP Exhaust Sound Clip Loudmouth Axle-Back (GT, GT500) Review

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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