American Thunder

Showing 73–96 of 170 results

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SKU
Product
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  • Chevrolet, Pontiac (305, 350) Exhaust System Kit
    SKU: 17233
    • Deep, powerful tone from the large-case 80 Series Cross-flow muffler with a moderate-to-aggressive exterior sound
    • 3.00-inch mandrel-bent aluminized steel inlet and dual tailpipes for smooth flow and improved throttle response, power, and mileage
    • Bolts up to factory hanger locations with U-Bolt clamps and all included hardware for an easy, no-cut install
    • Dual 3.00-inch polished stainless steel tips deliver a muscular, traditional dual-exhaust look
    • CARB (California) compliant and backed by Flowmaster’s 3-Year Limited Warranty
  • 67-70 Ford Mustang (289, 302, 390, 428, 429) Exhaust System Kit
    SKU: 17282
    • True dual crossmember-back design with a built-in H-pipe crossover for balanced flow and a stronger pull
    • Super 44 Series mufflers deliver a deep, moderate-to-aggressive tone you can hear inside and out
    • 16-gauge mandrel-bent aluminized steel with 2.50-inch dual tailpipes and a rear-bumper turndown
    • Improves throttle response, power and mileage over the factory system
    • Includes all hangers and hardware needed for installation
    • CARB (California) compliant and backed by a 3-year Limited Warranty
  • 66-67 Ford Fairlane (289, 390, 427) Exhaust System Kit
    SKU: 17289
    • Complete crossmember-back exhaust system built specifically for the 66-67 Ford Fairlane with 289, 390, or 427 engines
    • 2.50-inch mandrel-bent 16 gauge aluminized steel tubing plus an H-pipe crossover to maximize flow and eliminate deceleration backrap
    • Large-case Super 50 Series mufflers deliver a deep, powerful sound with built-in resonators to keep interior drone down
    • Dual mandrel-bent tailpipes capped with 3.00-inch angle-polished stainless steel tips for an aggressive finished look
    • CARB (California) compliant and backed by Flowmaster’s 3-Year Limited Warranty on aluminized steel systems
    • Includes all necessary parts, hardware, and instructions for a complete installation
  • Chevrolet, GMC (6.0) Exhaust System Kit
    SKU: 17325
    • Complete American Thunder cat-back exhaust system with the dual-inlet 50 Series Big Block muffler included for a deep, powerful tone
    • Delivers a moderate interior tone with an aggressive exterior sound — heard without being obnoxious
    • Designed to improve throttle response, power, and mileage on your 6.0 Chevrolet/GMC truck
    • Tailpipe exits behind the right-side rear wheel, an ideal layout for towing
    • Finished with a large 3.50-inch polished 304 stainless steel tip embossed with the Flowmaster logo
    • CARB (California) compliant and uses factory hanger locations for an easy, bolt-on installation
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 17200
    • True-dual, crossmember-back design with all mandrel-bent 3.00-inch tubing for maximum flow and power
    • Dual Super 40 Series mufflers plus a built-in H-pipe crossover deliver a deep, aggressive exhaust note
    • Custom-bent tailpipes tuck high over the rear end and exit with a clean turn-down under the bumper
    • Complete kit includes U-bolt clamps, hardware, and hangers for a straightforward install
    • CARB (California) compliant with Emission Code 5, backed by a 3-year Limited Warranty
    • Stainless steel version available (PN 817200) with a Lifetime Limited Warranty for added durability
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 17202
    • True dual 3.00-inch mandrel-bent aluminized steel design maximizes exhaust flow and delivers a deep, aggressive muscle car tone
    • Super 40 Series mufflers in a large case are built to handle high horsepower while producing a muscular sound
    • Integrated H-pipe crossover balances exhaust pressures to add hp and torque and reduce deceleration back-rap
    • Improves throttle response, power, and mileage — the signature benefits of a Flowmaster system
    • CARB (California) compliant and includes all necessary parts and hardware for an easy bolt-on installation
    • Backed by Flowmaster’s 3 Year Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17212
    • Deep, aggressive sound from a matched pair of Super 44 Series mufflers with Delta Flow technology
    • Free-flowing 2.50-inch aluminized steel mandrel-bent inlet pipes and tailpipes for smoother exhaust flow
    • Bolt-on installation using factory hanger locations with all U-Bolt hardware and instructions included
    • Emissions legal and CARB (California) compliant for street-legal peace of mind
    • Dual tailpipes finished with long 2.50-inch polished 304 stainless steel tips for a show-car look
    • Fits 1994-1997 Mustang GT and Cobra 4.6L or 5.0L coupes and convertibles
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17112
    • Bolt-on, emissions-legal cat-back designed for 1994-1997 Mustang GT and Cobra with the 4.6L SOHC or 5.0L engine
    • Delivers the iconic deep, aggressive 90s Mustang sound via a pair of Super 44 Series mufflers
    • 2.50-inch aluminized steel mandrel-bent tubing for smooth, free-flowing performance
    • Factory-style flanges and factory hanger locations make installation quick and easy
    • CARB (California) compliant and emissions legal for street use
    • Includes all necessary hardware and easy-to-follow instructions; fits coupes and convertibles
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 17120
    • Complete crossmember-back dual exhaust engineered specifically for 1964–1972 El Camino/Sprint V8, 2WD applications
    • 2.50-inch mandrel-bent aluminized steel with a built-in H-pipe for equalized pressures, no deceleration backrap, and maximum power
    • Super 50 Series mufflers deliver a deep, aggressive exterior tone with minimal interior drone
    • 3.00-inch angle-cut polished stainless tips exit behind the rear wheels for an aggressive muscle-car look
    • CARB compliant and includes all necessary parts and hardware for an easy fit
    • Improves throttle response, power, and mileage like all Flowmaster systems
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17116
    • Delivers a deep, powerful, aggressive tone from a pair of Super 44 Series mufflers
    • Mandrel-bent 2.50-inch aluminized steel pipes support improved throttle response, power, and mileage
    • Bolts on using factory exhaust hangers with all necessary parts and hardware included
    • Dual tailpipes exit straight out the back with a turn down at the lower valance for a clean look
    • CARB (California) compliant and backed by a 3-year Limited Warranty on aluminized steel systems
    • Fits 2WD Coupes and Convertibles, with an optional stainless steel version available
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17248
    • Deep, powerful sound from large-case Super 40 Series mufflers with a moderate-to-aggressive exterior tone and mild-to-moderate interior tone
    • Improved throttle response, power, and mileage thanks to smooth mandrel-bent aluminized steel tubing
    • Muscular looks with dual 2.50-inch tailpipes and dual 3.00-inch polished stainless steel tips
    • Easy bolt-on install using factory hanger locations, with all necessary parts and hardware included
    • CARB (California) compliant and backed by Flowmaster’s 3-year Limited Warranty
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 17273
    • Complete 2.50-inch dual exhaust custom designed for 1964-1966 Ford Mustang (non-GT, hardtop, 2WD)
    • Pair of 40 Series Delta Flow mufflers delivers a deep, powerful sound with moderately aggressive exterior and moderate interior tone
    • 16-gauge aluminized steel with all mandrel-bent tubing and an H-pipe for improved throttle response, power, and mileage
    • Polished stainless steel tailpipe tips that tuck up for maximum clearance and a show-car look
    • Includes all necessary parts, hardware, and instructions for an easy install, backed by a 3-Year Limited Warranty
    • CARB (California) compliant with U-bolt clamping for a secure, straightforward fit
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17162
    • Direct-fit cat-back designed specifically for 1992-1995 Chevy Blazer and GMC Jimmy 5.7L (4WD)
    • Super 50 Series muffler delivers a deep, powerful tone with mild-to-moderate cabin sound and moderate exterior volume
    • Full 3.00-inch mandrel-bent aluminized steel inlet and tailpipe for efficient exhaust flow
    • Bolt-on installation using factory hanger locations, U-bolt clamps, and all necessary hardware included
    • CARB compliant and emissions-legal, backed by Flowmaster’s 3-year Limited Warranty
    • Angle-cut turn-down tip exits behind the right rear wheel for a clean, aggressive look
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17171
    • Aggressive exterior tone with a moderate interior sound thanks to the aluminized steel Super 50 Series muffler
    • Heavy 16-gauge mandrel-bent aluminized steel tubing for durability and maximum performance
    • Dual 2.50-inch tailpipes clear the factory spare tire and exit straight out back for a muscular look
    • Complete cat-back system includes all parts, hardware, and instructions for easy at-home installation
    • CARB (California) compliant and backed by a 3-year Limited Warranty
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 817139
    • Complete true dual crossmember-back kit with 2.50-inch mandrel-bent stainless steel tubing for maximum flow
    • Dual Super 44 Series mufflers deliver a moderate to aggressive interior and exterior tone
    • Built-in H-pipe/balance tube plus improved throttle response, power, and mileage
    • Angle-cut brushed stainless steel tips exit straight out under the rear bumper for a clean finish
    • Includes all hangers and hardware, is CARB compliant, and backed by a Lifetime Limited Warranty
    • Engineered for 1969 Camaro and Firebird V8 models, including Convertibles with a simple X-brace adjustment
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17342
    • Deep, powerful exterior tone with a mild to moderate interior sound level for everyday livability
    • Super 50 Series performance muffler and specially designed resonator keep the cabin comfortable while boosting flow
    • Mandrel-bent 3.00-inch aluminized steel tubing improves throttle response, power, and mileage
    • Dual 2.50-inch tailpipes finished with 3.00-inch polished stainless steel tips for a subtle custom look
    • Uses factory hanger locations with U-bolt clamps and includes all parts and hardware for an easy fit
    • CARB (California) compliant and backed by a 3-year Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817116
    • Aggressive, deep exhaust tone from a pair of Super 44 Series mufflers for enthusiasts who want to be heard
    • Mandrel-bent 2.50-inch stainless steel inlet and tailpipes deliver maximum flow and lasting durability
    • Improved throttle response, power, and mileage in a complete cat-back package
    • Uses factory exhaust hangers with all parts and hardware included for a quick, easy installation
    • CARB (California) compliant and backed by a Lifetime Limited Warranty
    • Clean straight-back exit with a turn down at the lower valance; exhaust tips sold separately for a custom finish
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 817200
    • True-dual 3.00-inch mandrel-bent design with a built-in H-pipe crossover for balanced flow and maximum power
    • Dual Super 40 Series performance mufflers deliver a deep, powerful, aggressive exhaust note
    • Built from durable 409 stainless steel and backed by a Lifetime Limited Warranty
    • Custom-bent tailpipes tuck up high and exit with a clean turn-down under the rear bumper
    • Purpose-built for 1968-1972 GM A-Body V8s (2WD) and CARB compliant
    • Comes complete with all necessary hardware and hangers for installation
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 817273
    • Purpose-built for 1964-1966 Ford Mustang V8 hardtop coupes (2WD) as a complete crossmember-back system
    • Free-flowing 2.50-inch mandrel-bent stainless H-pipe and dual 40 Series Delta Flow mufflers for power and that iconic deep tone
    • 2.50-inch 304 stainless steel tips and high-tucked tailpipes deliver a true show-car look
    • Includes all necessary parts, hardware, and easy-to-follow instructions for a bolt-on install
    • CARB (California) compliant and backed by Flowmaster’s Lifetime Limited Warranty
  • 15-23 Dodge Challenger (3.6) Exhaust System Kit
    SKU: 817737
    • Complete bolt-on catback exhaust system engineered specifically for the 2015-2023 Dodge Challenger 3.6L
    • Durable 409S stainless steel with 2.50-inch mandrel-bent tubing for smooth, unrestricted flow
    • Scavenger X-pipe crossover and dual Super 44 mufflers deliver deep sound and maximum power
    • Aggressive/moderate exterior tone paired with a mild interior sound for everyday driving comfort
    • CARB (California) compliant and backed by Flowmaster’s Lifetime Limited Warranty
    • Includes all necessary parts and hardware for an easy, straightforward installation
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817312
    • Complete dual cat-back system with mandrel-bent 2.50-inch stainless steel tubing for maximum flow
    • Includes matched Super 40 Series mufflers for an aggressive, unmistakable exhaust tone
    • Delivers improved throttle response, power, and mileage in a single upgrade
    • Large 3.00-inch polished dual tips exit in the factory location for a clean, aggressive look
    • Uses factory hanger locations with all hardware and instructions for an easy at-home install
    • CARB (California) compliant for legal, worry-free fitment
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817342
    • Increases horsepower, torque, and mileage on 2001-2006 GM Suburban, Avalanche, and Yukon XL 1500 SUVs
    • 16-gauge mandrel-bent stainless steel construction for maximum flow and long-term durability
    • Super 50 Series muffler with dual chambered resonators delivers a moderate interior tone and deep exterior sound
    • Dual 2.50-inch side-exit tailpipes finished with large 4.00-inch polished 304 stainless tips
    • Includes all parts and hardware for a great-fitting install, plus CARB compliance and a Limited Lifetime Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817397
    • Fully built from 16-gauge mandrel-bent stainless steel with a 50 Series HD muffler for durable, free-flowing performance
    • Aggressive yet moderate exterior tone engineered to minimize drone inside the cab
    • Choose dual side-exit for towing clearance or straight-out-the-back for a muscular look
    • Finished with large 3.00-inch polished stainless steel tips and dual 2.50-inch mandrel-bent tailpipes
    • Includes all parts and hardware for an easy at-home installation, backed by a Lifetime Limited Warranty
    • CARB compliant and fits both 2WD and 4WD 2004-2005 Ram 1500 5.7L Hemi models across all wheelbases
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 817409
    • Complete true dual crossmember-back exhaust built specifically for 1968-1972 GM A-body V8 vehicles
    • 2.50-inch mandrel-bent stainless steel tubing plus a built-in H-pipe improves throttle response, power, and mileage
    • Large-case Super 40 Series mufflers deliver an aggressive interior and exterior tone
    • Dual 2.50-inch tailpipes exit at a slight down angle under the rear bumper for a muscular look
    • Includes all hangers and hardware needed for installation
    • CARB compliant and backed by Flowmaster’s Lifetime Limited Warranty

Showing 73–96 of 170 results