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SLP Performance D31029 - SLP Loudmouth Exhaust Challenger 5.7L Cat-back System use w/stock exhaust manifolds; 2008-2014.
Now available from SLP is the Stainless Steel Modular Cat-Back Exhaust System for the 2009-12 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:
| Model | Type | Sound Characteristics* | Noise Level* |
|
Bullet-Type
Open Resonator (or muffler delete) |
Extremely aggressive; powerful high- and
mid-range tones with moderate resonance |
|
 |
Muffling, Bullet-
Type Resonator |
Similar to original Loud Mouth, but with
a throatier tone and reduced resonance |
 |
 |
Straight-Through
"Traditional" Muffler |
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.
California Residents: Prop 65 WARNING: This product MAY contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov
California Residents: CARB WARNING: LMPerformance will not ship any products that are not CARB approved to California. This only affects CARB related products such that affect car performance and emissions where CARB approval is required.
Legal: Some or all of these parts may not comply with Federal, State, Province, and/or Local laws, ordinances, and regulations. Buyer takes all responsibility to ensure that any modifications or upgrades that have done conform to all applicable laws and regulations for road use, especially pertaining to safety and emissions. LMPerformance is not responsible for buyer not complying with Federal, State, Province, and/or Local laws, ordinances, and regulations. This policy shall be in force for all past, current, and future purchases from LMPerformance, Inc.
* FREE SHIPPING: Please note FREE Shipping refers to shipping within the contiguous contential US only. All other locations extra.
Search Terms: D31029 SLP Performance SLP Loudmouth Exhaust Challenger 5.7L Cat-back System use w/stock exhaust manifolds Catback Dodge Exhaust Systems Loudmouth I SLP Loudmouth Exhaust Challenger 57L Cat-back System use w stock exhaust manifolds 2008 2009 2010 2011 2012 2013 2014
SLP's warranty obligations for SLP® Parts and Accessories (individually and collectively “Part(s)”) is limited to defects in
materials and workmanship, as solely determined after SLP’s careful inspection, for that period identified in the chart
below that begins on the date of retail purchase by the original end-user purchaser ("Warranty Period"). 90 Days from the date of retail purchase by the original end-user purchaser. *Excludes SLP® Overstock Parts, NON-SLP® Parts and Accessories, SLP® Wheels; SLP Superchargers®
; SLP® Competition Parts, and SLP® Crate Engines, which the warranty coverage for the foregoing, if any, is separate from that explained here.
These are parts that other customers have purchased while purchasing the product on this page.
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.
SLP loudmouth 2013 challenger, Date: 5/9/2014
By: Beepx22
Ownership: 1 day - 1 week
Great exhaust. Loud at wide open. Nice rumble at idle. Install took less than hour with access to a lift. Don''t think you''ll find a better exhaust for the money.
Current Mods:
Slp loudmouth
Reviews for SLP Performance's Other products are show below.
Works well, Date: 5/28/2017Current Mods:
K&N
Flowmaster
Blackbear custom tune
Cold Air induction: Performance & Risks, Date: 10/30/2016Current Mods:
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.
Mostly Visual but worth the $, Date: 7/6/2016Current Mods:
K&N intake, magnaflow muffler swap, SLP rear section (resonator delete) and BlackBear Tune
Great addition, Date: 2/26/2016Current Mods:
First mod with opened up fog light surrounds to improve air flow.
High quality, great product!, Date: 9/16/2015Current Mods:
Air raid intake.
1998 Camaro, Date: 4/18/2015Current Mods:
too many to list
Load an proud, Date: 4/16/2015Current Mods:
Bbd cold air intake ..2013 Vette
Fitment not the best, Date: 8/20/2014Current Mods:
Magnaflow Catback
Terrible fit at the cats, Date: 8/19/2014Current Mods:
Nothing as I'm still working on this y-pipe fitment.
SLP lid a must, Date: 3/2/2014Current Mods:
SSRA ram air, k&n, slp airlid, pacesetter y-pipe, slp loudmouth exhaust, 3.73 gear, hyper tech MAX energy programmer
Add a clip, Date: 2/26/2014Current Mods:
Exchanged stock exhaust with SLP Loudmouth Exhaust for v6 2010-2014 Axle-back system.
Xcellent pipes, Date: 12/30/2013Current Mods:
BBK shorty headers...SLP LOUDMOUTH exhaust and BBK Twin Throttle Body
AMAZINGLY LOUD!!!!, Date: 9/18/2013Current Mods:
none. just this axleback
1 of the Best bolt on's for the LS1, Date: 8/22/2013Current Mods:
SLP Air Lid, SLP Loudmouth
04 Comp G, Date: 8/7/2013Current Mods:
3.5 SLP pulley,SLP catback,ZZP pcm, K&N intake and wax
99 T/A ls1 loudmouth II, Date: 4/26/2013Current Mods:
Slp cold air kit computer tune built transmission cat delete
Slp loud mouth II , Date: 3/29/2013Current Mods:
90mm intake and tb, lt headers, off road y, slp loud mouth II
SLP LOUDMOUTH 1'S 2.5INCH, Date: 3/19/2013Current Mods:
Catless..pcm custom tuned.
2012 v6 camaro rs, Date: 11/25/2012Current Mods:
slp loudmouth axle back #31201
LOVE IT !!!, Date: 10/21/2012Current Mods:
2007 Corvette Convertible Z51 3LT Stock
2008 G8 GT, Date: 8/19/2012Current Mods:
Exhaust
Cold Air, Date: 7/17/2012Current Mods:
Hypertuned, adjustable shocks, high flow cat
good, Date: 6/11/2012Current Mods:
3.5 pully cold air intake reprogramed pcm the other guys headers jegs mas air flow sencor larger throttle body msd coils and wires adjustable fuel pressure regulator
SLP Airlid (2000 Camaro SS), Date: 5/14/2012Current Mods:
SLP Airlid, SLP Bellow, K&N Filter, UMI 3-Point Sub-Frame Connectors, Spohn Tunnel Brace, Spohn Strut Tower Bar.
bad day, Date: 4/13/2012Current Mods:
SLP loudmouth and catted x. MSD coils, steeda cold air, throttle body and plenum, Steeda under drive pulleys, and drive train/ suspension mods
skip shift elimunator, Date: 3/29/2012Current Mods:
2000 CAMARO Z28
Amazing, Date: 3/6/2012Current Mods:
This is my first mod
Amazing, Date: 3/6/2012Current Mods:
This is my first mod
Awesome sound, Date: 2/25/2012Current Mods:
Slp loudmouth axle back, airaid cai, airaid throtle body spacer
Slp lid, Date: 1/22/2012Current Mods:
02 camaro z28 6 speed: Slp lid, pacesetter long tubes, pacesetter cat less y pipe, Borla adjustable catback, diablosport 2 predator custom tuned, ported and polished stock throttle body
slp loudmouth g8 gt, Date: 1/12/2012Current Mods:
massive spark plugg wires , ngk tr pluggs, afe power cold air intake, underdrive, synthetic, v-power gas only , next is custom x pipe , getting rid of resonator factory.
2001 SLP camaro, Date: 1/11/2012Current Mods:
2001 stock SLP camaro
Amazing Product, Date: 10/27/2011Current Mods:
slp cai, slp air lid,flowmaster exhaust
2012 GT500 SLP Loudmouth Axle back, Date: 9/7/2011Current Mods:
2012 GT500, all stock with the exception of the SLP Loudmouth axle back
Awesome, Date: 8/30/2011Current Mods:
2002 35th Anni Black Camaro z28, high flow cats, 3" SLP off road y pipe, heartthrob exhaust cutout, ls6 intake, hp tune
GTP SLP powerflo ehaust system , Date: 7/28/2011Current Mods:
SLP Exhaust system
slp cold air , Date: 7/10/2011Current Mods:
im not one of those dont ask dont tell people but have to much to list i make 635rwhp
2000 Pontiac Trans Am ws6, Date: 6/30/2011Current Mods:
SLP Lid, SLP MAF, SLP Smooth Bellow, Magna Flow cat back exhaust back exhaust, Spohn adjustable strut tower brace, Spohn Tunnel brace, SLP performance Y pipe. You will find out the other mods if any want to race.
loud mouth, Date: 6/6/2011Current Mods:
Slp loudmouth
SLP LOUD MOUTH II ON 2002 CAMARO Z28 SINGLE EXHAUST, Date: 5/30/2011Current Mods:
My car is a B4C edition. It came with quite a few extras including the LS6 intake and block. I added the SLP Air Lid a few months ago.
loudmouth, Date: 5/15/2011Current Mods:
Loudmouth resignator
Nice, Date: 5/8/2011Current Mods:
full SLP system from heads to tips.
great!, Date: 4/26/2011Current Mods:
walmart rims, kimbo slice short shifter, o'reiley's direct port nitrous system, autozone head & cam combo, costco headers, 2 hardcoremaxx facepounder 12" competition subs and amp... :)
These sound AWESOME!, Date: 4/11/2011Current Mods:
SLP Loudmouth, Vararam Snake Charmer
SWEET!!!!!!, Date: 4/10/2011Current Mods:
3.73's, and SLP loudmouths
SLP LOUDMOUTH, Date: 3/28/2011Current Mods:
Stock fully loaded 5.0
Aaaaaauuuuuusum, Date: 2/20/2011Current Mods:
The SLP 2011 Mustang GT Loudmouth Axle-Back Exhaust is my first Modification to my unbelievable 5.0. This needs no explanation,if you own one.
Flop, Date: 2/15/2011Current Mods:
Just a regular K&N filter.
AWESOME!, Date: 2/11/2011Current Mods:
NONE
Can you hear me now?, Date: 1/5/2011Current Mods:
SLP Mustang GT Loudmouth Axle-Back Exhaust Loud Mouth w/4 inch Tips
2007 CORVETTE, Date: 12/13/2010Current Mods:
STOCK 6.0
slp loud mouth II, Date: 11/13/2010Current Mods:
functional carbon fiber ram air hood/k&n cool air intake
nice, Date: 10/22/2010Current Mods:
this is a nice part i got aftermarket wires plugs intake headers exhaust and tuned. i am pushing 385hp with this set up the intake is slp the headers are slp the exhaust is a y pipe slp and the
cold Intake package, Date: 10/14/2010Current Mods:
Slp cold air intake, Pacesetter LT headers and y-pipe, Magnaflow cat back exhaust, Spohn Torque arm
Wicked LS1 Growl, Date: 10/13/2010Current Mods:
1999 Z28 Camaro 5.7 Liter LS1, mostly Stock with 3:96 gears
from a purr to a GROWL!, Date: 10/4/2010Current Mods:
SLP loudmouth axel back exhaust
SLP powerflo-better than stock without being painful, Date: 9/27/2010Current Mods:
powerflow axel back exhaust
Awesome, Date: 9/27/2010Current Mods:
SLP long-tube headers and SLP LM-1 exhaust on a 2000 SS camaro.
Awesome, Date: 9/27/2010Current Mods:
SLP long tube headers, SLP LM-1 exhaust
Awesome Sound, Date: 9/1/2010Current Mods:
This is currently the only modification
slp lm1's, Date: 8/25/2010Current Mods:
bone stock
good affordable exhaust, Date: 7/11/2010Current Mods:
slp loudmouth 2 catback
2006 Magnum RT, Date: 7/1/2010Current Mods:
No Additional Mod's at this time.
SLP LM1, Date: 5/24/2010Current Mods:
2000 Mustang GT - Full bolt ons, full suspension, with nitrous.
slp loudmouths II , Date: 5/14/2010Current Mods:
Jba headers k n intake loudmouth exhaust and diablo superchip
2009 Racecraft 420 S Mustang, Date: 4/15/2010Current Mods:
Saleen Supercharger, Racecraft suspension system, 2.5 Ford Performance Exhaust System. 420 hp 400 ft lbs torque.
SLP Cold Air Induction, 1992-96 LT-1/1990-95 ZR-1 Corvette, Date: 4/7/2010Current Mods:
All Bolt-Ons
SLP Exhaust, Date: 3/2/2010Current Mods:
99 gtp gen v 3.1, n* tb, slp headers, xp cam, 42.5# injectors
Wow..., Date: 2/9/2010Current Mods:
Exhaust
slp's, Date: 1/11/2010Current Mods:
dont ask dont tell
wicked, Date: 12/21/2009Current Mods:
cai,4.10 gear,throttle body,mac prochamber no cats,diablo sport tune,slp lm1
Awesome, Date: 9/29/2009Current Mods:
SLP loudmouth exhaust
SLP Loudmouth, Date: 9/15/2009Current Mods:
This is the first mod.
loudmouth 2 Charger 5.7, Date: 9/11/2009Current Mods:
slp loudmouth 2,mopar cold air intake,
04 GTO Loud MouthII , Date: 7/17/2009Current Mods:
K&N FIPK cold air system
Love them!, Date: 7/2/2009Current Mods:
No mods on my 2010 Camaro SS.
awesome, Date: 6/13/2009Current Mods:
dont ask dont tell
help, Date: 4/21/2009Current Mods:
see below
GREAT Product!, Date: 3/23/2009Current Mods:
None
Flow Pac, Date: 2/13/2009Current Mods:
SLP Flow Pac, SLP MAF sensor, SLP Loud mouth 2 cat back
Loud Mouth II, Date: 12/4/2008Current Mods:
K&N Cold Air Intake
SLP LOUDMOUTHS, Date: 10/22/2008Current Mods:
DONT ASK, DONT TELL.
sounds great, Date: 7/28/2008Current Mods:
SLP lm2 cat back w/slash tips, new shocks,
trick flow induction elbow, gutted cat, K&N FIPK, 160 powerstat and hypertec power programmer
Below are other popular parts other customers have purchased for their Dodge Challenger.
Originating in 2001 the work force at Late Model Performance has maintained a noteworthy high level of customer service and has made available a multifarious selection of new performance automotive parts and appurtenances represented by some of the preeminent names in the automotive performance parts industry. The vehicles represented range from 1950 to the present date and our inventory is tremendous and is continually rejuvenated for the purpose of offering an incomparable number and multiplicity of parts to meet the customer's every need. Our 5-star service is an additional reason to shop at Late Model Performance. All of our Performance Auto Parts include FREE Shipping and of course 5-star award winning customer service. See what LM Performance looked like in 2003.
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