American Thunder

Showing 97–120 of 170 results

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SKU
Product
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  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 817281
    • True dual crossmember-back design with a built-in H-pipe crossover for balanced flow and a bold, aggressive tone
    • Super 44 Series mufflers deliver a moderate to aggressive sound inside and out for enthusiasts who want to be heard
    • 16-gauge mandrel-bent stainless steel tubing with a 2.50-inch inlet for durability and smooth flow
    • Dual polished 3.00-inch stainless steel tips exit cleanly through the factory rear valance cutouts
    • Includes all hangers and hardware for an easy, complete installation
    • CARB compliant and engineered to improve throttle response, power, and mileage
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 817282
    • True dual crossmember-back design with a built-in H-pipe crossover for balanced flow
    • 16-gauge mandrel-bent stainless steel construction built for durability and smooth flow
    • Super 44 Series mufflers deliver a moderate-to-aggressive interior and exterior tone
    • Includes all hangers and hardware needed for an easy-fit installation
    • CARB compliant and designed for 2WD applications
    • Improves throttle response, power, and mileage like all Flowmaster systems
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817328
    • Deep, powerful exterior tone with a moderate interior sound, delivered by the dual inlet 50 Series Big Block muffler
    • Improves throttle response, power, and mileage as a genuine Flowmaster Cat-back upgrade
    • Durable 409 stainless steel tailpipe capped with a polished 304 stainless 4.00-inch Flowmaster-embossed tip
    • Right-side rear exit behind the wheel is ideal for towing
    • Uses factory hanger locations and includes hardware and a custom aluminum heat shield for an easy install
    • CARB (California) compliant fitment for 2001-2006 (2007 Classic) Silverado/Sierra 2500HD/3500HD 6.0L or 8.1L
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817479
    • Complete cat-back dual exhaust with everything you need — all parts and hardware included for easy home installation
    • Scavenger Series X-pipe and dual 2.50-inch mandrel-bent tubing deliver maximum scavenging and a deep, unique tone
    • Super 40 Series mufflers offer more internal volume to handle the flow demands of the Hemi engine
    • Bolts up using factory hanger locations and exits into the factory rectangular exhaust tips for a clean, integrated look
    • CARB (California) compliant and backed by Flowmaster’s Lifetime Limited Warranty
  • Flowmaster American Thunder Axle-back Exhaust System
    SKU: 817483
    • Delivers a deep, aggressive exterior tone from dual Flowmaster performance mufflers while keeping interior sound at a moderate, drivable level
    • Mandrel-bent 2.50-inch stainless steel tubing ensures smooth exhaust flow for the 2010-2015 Camaro 3.6L
    • Uses factory hanger locations with included hardware and instructions for an easy at-home installation
    • Finished with highly polished 4.00-inch stainless tips embossed with the Flowmaster logo for a premium look
    • CARB (California) compliant with Emission Code 5, so you get the sound without emissions worries
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817477
    • Aggressive, moderately deep exterior tone from the 50 Series HD muffler with minimal drone inside the cab
    • Full 16-gauge mandrel-bent stainless steel construction for durability and smooth exhaust flow
    • Muscular dual 4.00-inch polished stainless tips exiting straight out the back under the rear bumper
    • Fits 5.7L Hemi 2009-2024 RAM 1500 (classic body) and 2009-2013 4.7L models
    • Includes the muffler plus all parts and hardware for an easy at-home installation
    • CARB compliant and backed by a Lifetime Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817499
    • Complete cat-back dual exhaust kit with all parts and hardware included for an easy, bolt-on installation
    • Super 40 Series muffler delivers an aggressive exterior tone with a moderate, drone-free interior sound
    • Mandrel-bent tubing and a 3.00-inch inlet support improved throttle response, power, and mileage
    • CARB (California) compliant, so you get serious performance sound while staying emissions legal
    • Dual tail pipe design and silver-finish piping give your 2WD vehicle a bold, purposeful stance
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817508
    • Complete cat-back dual exhaust system delivering a moderate-to-aggressive tone inside and out
    • Mandrel-bent tubing paired with the specially selected Super 40 Series muffler for maximum flow and sound
    • Improves throttle response, power, and mileage the Flowmaster way
    • CARB (California) compliant with an emission code of 5
    • Includes all necessary parts and hardware for an easy, straightforward install
    • Dual tail pipe design with a 2.50-inch inlet and clean silver pipe finish
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817513
    • Delivers improved horsepower, torque, and mileage with a deep, moderate exhaust tone from the proven 50 Series HD muffler
    • Built from durable 409S stainless steel with a 3.00-inch mandrel-bent tailpipe for lasting corrosion resistance and smooth flow
    • Application-specific fit for 2004-2005 Dodge Ram 1500 5.7L Hemi trucks across all wheelbases
    • Easy bolt-on installation with included instructions and all necessary hardware
    • Finished with a polished 3.50-inch stainless steel Flowmaster tip exiting behind the passenger-side rear tire
    • CARB compliant and backed by Flowmaster’s Lifetime Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817519
    • Aggressive-yet-moderate American Thunder tone that’s heard inside and out without overwhelming drone
    • Includes the Super 50 Series muffler plus all necessary parts and hardware for an easy bolt-on install
    • 2.50-inch free-flowing design improves throttle response, power, and mileage
    • Single side exit, single tail pipe layout delivers a subtle custom appearance
    • CARB (California) compliant with Emission Code 5 for legal, worry-free operation
    • Built for 4WD applications with a clean silver pipe finish
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817529
    • Complete cat-back kit with stainless steel mandrel-bent 2.5-inch inlet pipe, Super 50 Series muffler, and dual tailpipes for freer-flowing exhaust
    • Delivers a moderate, refined sound level that appeals to most enthusiast owners without excessive drone
    • Finished with large 3.00-inch polished 304 stainless steel tips for a durable, high-quality look
    • Fits 1998-2011 Ford Ranger and 1998-2009 Mazda B3000/B4000 extended cab trucks with 3.0L or 4.0L engines, both 2WD and 4WD
    • CARB (California) compliant and backed by Flowmaster’s Limited Lifetime Warranty
    • Includes all necessary parts, hardware, and installation instructions for a complete install
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817533
    • Adds improved horsepower and torque to the 5.6L Nissan Titan with a proven American Thunder cat-back design
    • Delivers an aggressive yet moderate exhaust note that sounds great inside and outside the truck
    • Built from durable 409S stainless steel with a mandrel-bent 3.00-inch tailpipe and 70 Series Big Block muffler
    • Finished with a large 3.50-inch polished stainless steel Flowmaster tip exiting in the stock passenger-side location
    • CARB (California) compliant and includes instructions plus all hardware for an easy bolt-on install
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817567
    • Delivers Flowmaster’s signature moderate-to-aggressive tone that lets your performance be heard
    • Complete cat-back kit includes the 50 Series HD muffler plus all necessary parts and hardware for easy installation
    • Improves throttle response, power, and mileage over a restrictive stock exhaust
    • Single side-exit design with black muffler and silver piping for a subtle custom appearance
    • CARB (California) compliant with a 3.00-inch inlet for efficient flow
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817574
    • Race-inspired American Thunder Extreme design delivers a super aggressive interior and exterior tone via Super 44 Series mufflers
    • Mandrel-bent piping maximizes flow for improved throttle response and power over the restrictive factory exhaust
    • Turn-down dual tailpipes add clearance for wide tires and modified suspensions while boosting sound level
    • Complete cat-back kit includes all necessary parts and hardware for an easy, bolt-on installation
    • CARB (California) compliant with a 2.50″ inlet, built for 2WD coupes and convertibles
  • Flowmaster American Thunder Direct Fit Muffler
    SKU: 817568
    • Full 409 stainless steel construction for lasting durability and corrosion resistance
    • 50 Series HD muffler with large 4.00-inch internals and a built-in resonator to keep interior sound to a minimum
    • Deep, moderate-aggressive exhaust tone that stands out outside the vehicle
    • Direct-fit design attaches to factory hanger locations for a quick, at-home installation
    • Fits 2009-2024* (*Classic body) RAM 1500 trucks with the 5.7L Hemi and factory dual tailpipes
    • Backed by Flowmaster’s Lifetime Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817507
    • Improves performance and fuel economy while delivering a moderate, refined tone inside and outside the cab
    • Two exit configurations included — under-bumper straight-out or side-exit behind the rear wheels, ideal for towing
    • Built from durable 16-gauge mandrel-bent 3.00-inch stainless steel with a 50 Series HD performance muffler
    • Uses factory hanger locations with all hardware and instructions for an easy, no-cut installation
    • CARB (California) compliant and backed by a Lifetime Limited Warranty
    • Finished with dual polished 304 stainless steel 3.00-inch tips for a premium look
  • 22-26 Nissan Frontier (3.8) Exhaust System Kit
    SKU: 818150
    • Adds up to 8 hp and 7 lb-ft of torque at the rear wheels over stock
    • Full 409 stainless steel construction with mandrel-bent 2.50 and 3.00-inch pipes for lasting durability and better flow
    • Super 50 series muffler delivers an aggressive-to-moderate tone with real performance
    • Bolts on using factory hanger locations with all hardware and instructions included for easy at-home install
    • 4.00-inch polished stainless tip with embossed Flowmaster logo for a custom look
    • CARB (California) compliant and backed by Flowmaster’s Lifetime Limited Warranty
  • 22-24 Ford Maverick (2.0) Exhaust System Kit
    SKU: 818153
    • Built from durable 409 stainless steel throughout with 3.00-inch mandrel bent pipes for improved flow and long-term durability
    • Outlaw series muffler tuned for a moderate sound level — added attitude without overwhelming the cabin
    • Dual 3.50-inch black stainless steel tips with embossed logo deliver a genuine custom look
    • Bolts on using factory hanger locations with included instructions and hardware for easy at-home installation
    • CARB (California) compliant and backed by Flowmaster’s Lifetime Limited Warranty
    • Purpose-engineered fitment for the 2022-2024 Ford Maverick 2.0L with rear or side exit options
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817609
    • Delivers a deep, aggressive interior and exterior sound tuned by Flowmaster’s Outlaw Series mufflers
    • 3.00 in. mandrel-bent 409S stainless steel tubing and a Scavenger X-pipe for smooth, free-flowing performance
    • Emissions-legal and CARB (California) compliant for street-legal peace of mind
    • Finished with dual tail pipes and 4.00 in. quad logo-embossed tips for a bold rear look
    • Easy bolt-on install with all necessary parts and hardware included
    • Backed by Flowmaster’s Lifetime Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817541
    • Delivers a moderate to aggressive Flowmaster sound level both inside and outside the cab
    • Stainless steel 50 Series HD muffler with dual 3.00-inch mandrel-bent tailpipes for smooth flow
    • Configurable to exit dual out the sides or dual straight out the back
    • Emissions-legal and CARB (California) compliant with Emission Code 5
    • Bolt-on design includes all necessary parts and hardware for an easy fit
    • Backed by Flowmaster’s Lifetime Limited Warranty and finished with polished 4.00-inch stainless tips
  • 24-26 Ford Mustang (2.3, 5.0) Exhaust System Kit
    SKU: 818162
    • Adds up to 8 hp and 6 lb-ft at the rear wheels with Super 44 mufflers for an aggressive tone
    • 3.00-inch mandrel-bent 409 stainless steel tubing maximizes exhaust flow and durability
    • Dual 4.00-inch polished stainless steel tips with embossed logo for a custom finished look
    • Bolt-on install using factory hangers and included hardware—no modifications needed
    • Fits 2024-2026 Mustang 5.0L GT and 2.3L EcoBoost, coupe and convertible, CARB compliant
    • Backed by Flowmaster’s Lifetime Limited Warranty
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 817654
    • Complete crossmember-back kit with mandrel-bent 2.50-inch stainless steel tubing and all installation hardware included
    • Dual Super 44 Series mufflers plus a built-in H-pipe crossover deliver a balanced, aggressive exhaust note
    • Four tailpipe exit options — angled down, straight out back, side exit, or dump style — to match your build
    • Purpose-built for 1967-1972 Chevy/GMC C10 and C15 1/2-ton 2WD coil-spring trucks, short or long wheelbase
    • Ample clearance for substantially lowered trucks, plus CARB compliance and a Lifetime Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817674
    • Frees up flow over the restrictive factory transverse muffler for maximum performance
    • Super HP-2 muffler delivers a moderate-to-aggressive exhaust note
    • High-tucked 3.00-inch polished stainless tip improves off-road ground clearance
    • Fits 2007-2018 Jeep Wrangler JK 2-door and 4-door with 3.8L or 3.6L engines
    • CARB (California) compliant and includes all hardware for easy at-home installation
    • Mandrel-bent 2.50-inch stainless steel tailpipe with dual pipe design
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817602
    • Aggressive exterior tone with a moderate interior sound, thanks to the 50 Series HD muffler and built-in tuned resonance chamber that fights drone
    • True bolt-on install using factory hanger locations, with all parts and hardware included for an at-home job
    • Choose your exit style — dual side-exit behind the rear tires for towing, or straight-out under the bumper for a muscular look
    • Polished stainless steel 3.50-inch tips with embossed logo and mandrel-bent piping for clean flow and appearance
    • CARB (California) compliant and backed by Flowmaster’s Lifetime Limited Warranty
    • Purpose-built fitment for 2011-2018 Silverado and Sierra 1500 6.2L trucks in 2WD and 4WD

Showing 97–120 of 170 results