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- Direct, specific fit for 1962-1974 Dodge/Plymouth B-Body cars — no universal guesswork
- Mandrel-bent 3-inch, 16-gauge aluminized steel for strong, corrosion-resistant flow
- Dual kit designed to work with offset inlet / center outlet mufflers
- Exits straight out the rear just under the bumper for a factory-style look
- Adds factory-like fitment to a custom exhaust build
- Backed by Flowmaster’s three year limited warranty
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- Long tube design with 1-5/8 inch unequal length primaries and a 3.00 inch collector for optimized exhaust scavenging on your Chevy Small Block Gen I
- Durable silver ceramic-coated finish combines a clean look with lasting protection
- Complete package includes collector, reducers, and all bolts/studs for installation
- Ball and socket flange with 3/8 inch flange thickness delivers a secure, sealed connection
- Fits D port cylinder heads including ZZ4 crate engines and most angle plug heads including factory Chevrolet bow tie heads
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- Complete dual cat-back system with 2.50-inch mandrel-bent aluminized steel pipes for strong, unrestricted flow
- Includes a pair of 50 Series Delta Flow mufflers for a mellow but powerful, drone-free tone
- Uses factory exhaust hangers and includes all hardware for a quick, easy bolt-on installation
- Moderate exterior tone with a mild interior tone — aggressive sound without the highway drone
- CARB (California) compliant and backed by a 3-Year Limited Warranty on aluminized steel systems
- Improves throttle response, power, and mileage with a clean turn-down exit at the lower valance
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- Bolt-on cat-back system engineered specifically for the 5.0L Fox body Mustang, using factory hanger locations for quick installation
- Free-flowing 2.50-inch aluminized steel mandrel-bent inlet pipes and tailpipes restore flow and preserve pipe diameter
- 50 Series Delta Flow mufflers deliver a moderate, deep and powerful tone that complements the iconic 5.0L
- Dual long 2.50-inch polished 304 stainless steel tips add a genuine show-car look
- Emissions legal and CARB (California) compliant, with all hardware and instructions included
- Fits 1987-1993 Mustang LX and 1986 Mustang GT (5.0L) coupes and convertibles
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- Replaces restrictive cast iron manifolds to boost throttle response, power and engine efficiency on GM Big Block engines
- Stainless steel construction with silver ceramic coating for durability and heat management
- 2 in. primary tubes and a 3.50 in. ball flange collector for strong, leak-free performance
- 3/8 in. thick flanges and 16-gauge tubing built to High Performance grade standards
- Includes gaskets, reducers, collectors and hardware for an easy, complete installation
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- Long tube, equal length design with 1-3/4 inch primary tubes for balanced scavenging and improved throttle response, power, and engine efficiency
- Stainless steel construction with a silver ceramic coating for maximum heat and corrosion durability
- 3/8 inch thick flanges and 3.00 inch ball flange collector connections ensure a rigid, leak-free installation
- Complete package includes collector, reducers, gaskets, and mounting hardware for an easier install
- Purpose-built to replace restrictive factory cast iron manifolds on Ford Small Block engines
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- 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
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- 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
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- 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
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- Replaces restrictive factory manifolds for improved throttle response, power, and engine efficiency on GEN 3 HEMI engines
- Stainless steel construction with a durable Silver Ceramic coating for heat and corrosion resistance
- 1-3/4 inch unequal-length primary tubes and 16-gauge tube walls for performance airflow and long-term strength
- 3/8 inch laser-cut flanges with a 2.50-inch factory collector connection for a direct-fit, leak-free install
- Includes gaskets, collector, and necessary M8 hardware to simplify installation
- 50-state legal for 2009-2016 models under CARB E.O. #D-698-19 and EPA Memo 1A compliant for 2017-2022 applications
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- 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
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Flowmaster American Thunder Cat-back Exhaust System – Super 40 Series, Aggressive / Moderate (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
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- 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
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- 2.50-inch mandrel-bent 16-gauge stainless steel tubing delivers maximum flow through smooth bends
- Dual configuration with long, polished 304 stainless steel tips for a bright, aggressive rear exit
- Pre-bent to tuck high in the chassis for good clearance and a straight-out exit under the rear bumper
- Engineered to pair with Side Inlet / Opposite Side Outlet mufflers like the Super 44 (842548) or 50 Series (842553)
- Backed by Flowmaster’s Lifetime Limited Warranty for long-term peace of mind
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- Built from 2.50-inch mandrel-bent 16-gauge stainless steel for maximum flow and long-lasting durability
- Direct-fit, specific-fit design tucks up high for good clearance and exits straight-out under the rear bumper
- Engineered to pair with Side Inlet/Opposite Side Outlet mufflers like the Super 44 (842548) and Super 50 (852558)
- Backed by Flowmaster’s Lifetime Limited Warranty
- High-performance grade construction with a natural stainless finish and flat band clamping
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- Flowmaster Outlaw axle-back exhaust engineered for 2014-2019 Corvette C7 6.2L Coupes and Convertibles
- All stainless steel construction with 3.00-inch mandrel-bent tubing for lasting flow and durability
- Quad 4.00-inch 304 stainless steel tips with embossed logo deliver a true performance look
- Deep moderate/aggressive exterior tone paired with a pleasant, drivable cabin sound
- Retains factory AFM valves and reuses the OEM actuator, mounting on factory hangers for a clean install
- CARB (California) compliant with the muffler included in the kit
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- 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
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- Delivers a powerful exterior sound while keeping a moderate, livable interior tone
- Straight-through Flow FX mufflers with large 3.00-inch cores for maximum flow
- Durable bright 409S stainless steel construction for years of reliable service
- Dual 4.50-inch black ceramic coated tips embossed with the Flowmaster logo
- Uses factory hanger locations with included hardware and instructions for easy at-home install
- CARB (California) compliant, direct fit for 2016-2024 Camaro SS 6.2L coupes and convertibles
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- Direct-fit axle-back upgrade for 2005-2010 Mustang GT, Shelby GT, GT500 (incl. GT500KR), California Special and Bullitt with 4.6L/5.4L engines
- Straight-through Flow FX mufflers with 3.00-inch cores deliver deep, aggressive-yet-moderate tone and strong flow
- Durable 409S stainless steel construction with dual 3.00-inch mandrel-bent tubing
- Large 4.50-inch ceramic-coated stainless tips with embossed logo fill the factory valance cutouts
- Bolts to factory hanger locations with all hardware and instructions included for easy installation
- CARB compliant and backed by Flowmaster’s Lifetime Limited Warranty
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- 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
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- 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
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- 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
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- Custom pre-bent to match Flowmaster system part# 817413 for a precise, headers-back fit
- 16 gauge mandrel-bent 2.50-inch stainless steel tubing for smooth flow and lasting durability
- Dual exit design that tucks up high above the rear axle for a clean look and clearance
- Specific fit for 1959-1964 Chevrolet Impala, Biscayne & Bel Air V8 models
- Includes clamps, hangers, and necessary hardware for a clean, easy installation
- Two tailpipe exit options depending on your vehicle’s year
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- Keeps your factory BBC 3-bolt manifolds while enabling a full headers-back exhaust system
- Built from 2.50-inch mandrel bent 409S stainless steel tubing for smooth flow and lasting durability
- High-quality flanges plus included donut gasket and donut sleeves deliver a leak-free, easy install
- Direct-fit dual downpipe kit for a wide range of classic BBC Chevrolet models
- Skips the clearance and maintenance hassles of header installs while still upgrading your exhaust
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