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Loud Mouth Axle-Back Exhaust System features:
NOTE: This Axle-Back Exhaust System is very aggressive and will create droning at highway speeds. Please make sure this is the system you intend to purchase, listen to the video clips and check with your local state laws for sound ordinances; once system is installed there are no returns.
|Model||Type||Sound Characteristics*||Noise Level*|
(or muffler delete)
|Extremely aggressive; powerful high- and
mid-range tones with moderate resonance
|Similar to original Loud Mouth, but with
a throatier tone and reduced resonance
|Deep, rich, and mellow; minimal resonance|
* Volume and sound quality will vary based on engine and exhaust-system specifications. Loudmouth also refers to some systems without any resonators such as the 2010 Camaro Loud Mouth and the 2005 Mustang Loud Mouth Axle backs where the mufflers are removed altogether. Images below are representations in order to better understand the differences.
History and information about SLP Performance and their products.
Since 2001, LMPerformance has worked closely with SLP Performance to offer customers a wide range of performance enhancements to the American muscle car, the best known of which is its SLP Loudmouth muffler and SLP Camaro systems. With our SLP Performance parts line we have helped customers transform late-model rides into modern muscle cars like the Camaro SS and Pontiac Firehawk.
True to its name, Street Legal Performance (SLP) has a vision ""to not just provide performance, but to do so with the best engineering practices and quality possible, far exceeding the industry standards." Impressively, SLP was the first company in the performance aftermarket to develop and manufacture a 50-state emission-legal performance package specifically for V8 Camaros and Firebirds. LMPerformance carries SLP's best-in-class performance upgrades in the following product categories: TVS Supercharger Packages, Blackwing Cold Air Intakes, SLP Exhaust Tips, SLP Loudmouth Mufflers, Powerflo Headers, SLP Accessories, SLP Suspension, SLP Brake Kits and SLP Wheels. The range of applications offered by the SLP line is equally as wide. Below is just a partial list: Chevy Camaro, Corvette, GM/GMC Trucks and SUVs, Pontiac Firebird, GTP, G8, GXP and GTO, Ford Mustang and F-150, Dodge Challenger, Charger, Magnum and 300.
Established in 1987, SLP performance parts has stood for quality enhancements for late-model American muscle cars and continues to work with vehicle manufacturers for top aftermarket performance. We carry SLP’s entire selection of dyno-tested engine components, SLP Loudmouth exhaust systems, and bolt-on power adders, plus the dress up accessories and incredible wheels your car or truck needs. We are impressed in how only SLP combines this level of OEM quality and aftermarket performance. SLP performance parts have an inestimable reputation across the spectrum of vehicle owners from everyday drivers to high performance aficionados. The products offered by SLP is a testament to their willingness to go the extra mile to see that you get the right part for your car to improve its functioning whether it be driving to work or aiming for the finish line.
ROUSH, the epitome of late-model Ford performance tuning, acquired SLP, the gold standard of late-model GM performance tuning and company responsible for supercharging the Regal GSX, Grand Prix GTX, G8 FIREHAWK, Camaro SS and the LT1 powered Firebird/Trans Am WS6. This outstanding combination should lead to continued success with an opportunity for more innovative and outstanding products. If you take a look at the array of SLP Camaro performance parts, you will see that this is a company you can trust to meet your high-performance needs.
Reviews for SLP Performance 31201 (the item on this page) are show below.
from a purr to a GROWL!, Date: 10/4/2010
By: junky van
Ownership: 1 day - 1 week
I have to say that I am very pleased with the SLP Loudmouth exhaust! The installation was a snap... took about an hour. The sound is incredible!! This was my first mod on my Camaro and I have to say it turned this V6 from a tame kitty purr to a fierce lion roar! The product is well made and very solid plus the tips look awesome. I would recommend this to anyone who wants to enhance the engines sound and turn a few heads along the way.
SLP loudmouth axel back exhaust
I recently installed this system and it definitely does change the sound quite a bit from quiet to VERY loud. I have no complaints about this product as long as you never drive over about 2,500 RPM in which case, it sounds great. The problem is that when you get up into the higher RPM's, it goes from a deep grumble to a Tokyo Drift style tonka toy. I feel embarassed to even take off fast because of that and about 4 days into owning it, I have already ordered the Flowmaster axel back system to install in its place which based on youtube videos, sounds great all the way up to the red line. It still has the V6 sound, but at least it still sounds American...
Just a regular K&N filter.
This exhaust really sounds awesome, a great addition to my 2011 camaro v6. Easy install, great price, and fast shipment from lm performance. Thank you.
Slp loudmouth axle back, airaid cai, airaid throtle body spacer
Definitely a great addition to the v6 camaro improves the sound way better than the stock exhaust definitely recommend it and super easy to install lift was not necessary
slp loudmouth axle back #31201
I really like the exhaust; but I was incredibly hesitant to buy for weeks because I just didnt get a serving-justice sound (confidence) in the exhaust. I tried youtube, but there are no videos for this exhaust on a 2013 LT model. A possible clip of its sound would do awesome...! Thanks
Exchanged stock exhaust with SLP Loudmouth Exhaust for v6 2010-2014 Axle-back system.
Reviews for SLP Performance's Other products are show below.
SLP CAI, 160 deg. thermos, competition harmonic balancer,4L60E shift kit, 3400 rpm stall converter, 373 rear end gears, granatelli 85mm maf ,Diablo predator reprogram, dual exhaust.224/224/581/581 comp cam with 114lsa and dual springs.
K&N intake, magnaflow muffler swap, SLP rear section (resonator delete) and BlackBear Tune
First mod with opened up fog light surrounds to improve air flow.
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* Shipping/Product Notes: Please note FREE Shipping refers to shipping within the contiguous continental US. All other locations extra. If your order will be delayed, you will be notified via email the estimated shipping date. Please note that we try to have every picture of every part number however some pictures may be representations. If you have any questions please call or contact us for clarification. For Example: Parts such as our clutch kit stages use the same pictures.