American Thunder

Showing 49–72 of 170 results

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SKU
Product
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  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817473
    • Mandrel-bent 2.50-inch stainless steel construction with polished 3.00-inch 304 stainless tips for lasting durability and a premium look
    • Super 40 Series muffler delivers a moderately aggressive exterior tone with a comfortable moderate interior tone
    • Choose straight-out-the-back exits for a muscular look or behind-the-rear-wheels routing that’s ideal for towing
    • Improved throttle response, power, and mileage from a true Flowmaster Cat-back system
    • Bolt-on install using factory hanger locations with all necessary parts and hardware included
    • CARB compliant and backed by Flowmaster’s Lifetime Limited Warranty
  • Dodge, Plymouth (273, 318, 340, 360, 383, 426) Exhaust System Kit
    SKU: 817585
    • Complete crossmember-back dual exhaust system with everything needed for an easy fit installation
    • Mandrel-bent 2.50 in. tubing and Super 40 Series mufflers deliver maximum flow and an aggressive American Thunder tone
    • Engineered to improve throttle response, power, and mileage on your classic Mopar
    • CARB (California) compliant with Emission Code 5
    • Fits Dodge and Plymouth 273, 318, 340, 360, 383, and 426 engines in 2WD applications
    • Dual tail pipe layout with silver-finish pipe; add your choice of exhaust tips (sold separately)
  • 13-14 Ford Mustang GT (5.0) Exhaust System Kit
    SKU: 817588
    • Aggressive exterior tone with a moderate, livable interior sound thanks to Super 44 Series dual mufflers
    • Durable 409 stainless steel construction with 3.00-inch mandrel-bent tubing for smooth flow
    • Large 4.00-inch polished stainless steel tips add a refined, upgraded look
    • Bolt-on axle-back design uses factory hanger locations and includes all necessary hardware
    • CARB compliant and emissions-legal for street use on 13-14 Mustang GT 5.0L coupes and convertibles
    • Backed by the Flowmaster Lifetime Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17471
    • Deep, aggressive exterior tone paired with a moderate interior tone that won’t overwhelm the cabin
    • Heavy 16-gauge mandrel-bent aluminized steel tubing with an included Super 50 Series performance muffler
    • Dual 2.50-inch tailpipes offer a choice of rear exit or side exit—side exit is ideal for towing
    • Polished 3.00-inch 304 stainless steel tips embossed with the Flowmaster name
    • CARB compliant and complete with all hardware and instructions for easy at-home installation
    • Fits 2WD and 4WD models across all wheelbases, backed by a 3-year Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17473
    • Delivers a moderately aggressive exterior tone with a moderate interior tone thanks to the Super 40 Series muffler
    • Mandrel-bent 2.50-inch aluminized steel improves throttle response, power, and mileage
    • Dual 2.50-inch tailpipes finished with polished 3.00-inch stainless steel tips for a muscular look
    • Choose straight-out-the-back exits or behind-the-rear-wheel exits ideal for towing
    • Uses factory hanger locations and includes all hardware for an easy install
    • CARB compliant and backed by a Flowmaster 3-Year Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17476
    • Super 50 Series muffler delivers a moderately aggressive exterior tone with a comfortable moderate interior sound — no annoying highway drone
    • Improves throttle response, power, and mileage thanks to free-flowing dual 2.50-inch tubing
    • Choose your tailpipe exit: straight out the back for a muscular look, or behind the rear wheels for towing
    • Polished 3.00-inch stainless steel tips give a premium, finished appearance
    • Bolts on using factory hanger locations with all parts and U-Bolt hardware included for easy installation
    • CARB compliant and backed by Flowmaster’s 3-year Limited Warranty
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 17655-FM
    • Delivers a moderate-to-aggressive Flowmaster tone from a pair of Super 40 Series mufflers, great inside and outside the car
    • Mandrel-bent 2.50-inch aluminized steel tubing with a built-in H-pipe crossover for balanced, free-flowing performance
    • Complete crossmember-back kit with dual tailpipes, polished oval stainless steel tips, and all necessary installation hardware
    • Designed as an easy bolt-on fit for 1965-1968 Chevy Impala and Caprice coupes, wagons, and convertibles
    • CARB (California) compliant and backed by a 3-year Limited Warranty
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 17742
    • Complete crossmember-back system with mandrel-bent 2.50-inch aluminized steel tubing and a built-in H-pipe crossover for smooth flow
    • Includes a pair of Super 44 Series mufflers for a moderate-to-aggressive sound inside and out
    • Choose dual rear exits under the bumper or dual side exits behind the rear tires to match your style
    • Fits 1973-1974 Chevy and GMC C10/C15 2WD trucks in both long and short wheelbase with automatic or manual transmissions
    • CARB compliant and backed by a 3-year Limited Warranty, with all installation hardware included
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 17654
    • Complete crossmember-back system with built-in H-pipe crossover and a pair of Super 44 Series mufflers for that signature Flowmaster growl
    • Choose from four dual tailpipe exit styles to match your truck’s look and stance
    • Mandrel-bent 2.50-inch aluminized steel tubing delivers smooth flow and durable construction
    • Direct fit for 1967-1972 Chevy/GMC C10 and C15 1/2 ton 2WD coil spring trucks, short or long wheelbase
    • CARB compliant and includes all necessary installation hardware
    • Provides adequate clearance for substantially lowered vehicles, backed by a 3-Year Limited Warranty
  • Chevrolet, Pontiac (302, 326, 327, 350, 396, 400) Exhaust System Kit
    SKU: 17129
    • True dual, crossmember-back exhaust system with a built-in H-pipe for improved throttle response, power, and a deep muscle car sound
    • 2.50-inch mandrel-bent aluminized steel tubing throughout for strong, consistent flow
    • Includes a pair of Flowmaster Super 44 Series mufflers (PN 942546) delivering a moderate to aggressive tone inside and out
    • Dual 2.50-inch tailpipes exit in the factory location behind the rear wheels for a clean, correct look
    • CARB (California) compliant and ships complete with all parts, hardware, and instructions for an easy fit
    • Stainless steel construction available via optional system #817129 for those who want an upgraded material
  • Chevrolet, Pontiac (5.7) Exhaust System Kit
    SKU: 17143
    • American Thunder cat-back system delivers a moderate-to-aggressive exterior tone with a comfortable, mild-to-moderate interior sound
    • 3.00-inch mandrel-bent inlet and 80 Series Cross-flow muffler (P/N 43083) improve throttle response, power, and mileage
    • Dual 2.50-inch mandrel-bent tailpipes give a muscular look and unmistakable presence
    • Bolts on using factory hanger locations with all necessary parts and U-Bolt hardware included
    • CARB (California) compliant and backed by Flowmaster’s 3-year Limited Warranty
  • 98-03 Ford F-150 (4.6, 5.4) Exhaust System Kit
    SKU: 817663
    • Aggressive Flowmaster tone from the Super 40 Series performance muffler paired with dual 2.50-inch mandrel-bent tailpipes
    • Choose dual rear-exit or dual side-exit behind the rear wheels — the side-exit setup is ideal for towing
    • Durable 409S stainless steel construction finished with large 3.50-inch polished stainless steel tips
    • Bolt-on fitment for 1998-2003 F-150 4.6L and 5.4L, all 2WD/4WD models and wheelbases, with all hardware included
    • CARB compliant and backed by Flowmaster’s Lifetime Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 817213
    • Delivers the deep, aggressive, iconic 5.0L sound thanks to a pair of Super 44 Series mufflers
    • Free-flowing 2.50-inch mandrel-bent stainless steel inlet pipes and dual tailpipes for smooth exhaust flow
    • Uses factory hanger locations plus included hardware and instructions for quick, easy installation
    • Emissions legal and CARB (California) compliant bolt-on upgrade
    • Long 2.50-inch 304 stainless steel tips add a show-car finish
    • Fits 1986-1993 Mustang LX (coupes and convertibles) and 1986 GT with the 5.0L engine, backed by a Lifetime Limited Warranty
  • Chevrolet, Pontiac (5.7) Exhaust System Kit
    SKU: 17133
    • Genuine Flowmaster American Thunder cat-back exhaust with an included 80 Series Cross-flow muffler for a deep, aggressive tone
    • Improves throttle response, power, and mileage thanks to 3.00-inch mandrel-bent aluminized steel tubing and smooth flow
    • Dual 2.50-inch mandrel-bent tailpipes deliver a traditional dual-exhaust look and muscular sound
    • Bolts to factory hanger locations with included U-Bolt hardware for an easy 2WD installation
    • CARB (California) compliant and backed by Flowmaster’s 3-year Limited Warranty
  • Chevrolet, Pontiac (302, 307, 327, 350, 396, 400, 427) Exhaust System Kit
    SKU: 17139
    • Complete true dual, Crossmember-back exhaust system that includes the Super 44 mufflers, hangers and hardware for a straightforward install
    • 2.50-inch mandrel-bent aluminized steel tubing plus a built-in H-pipe delivers maximum flow and a balanced, aggressive tone
    • Super 44 Series mufflers produce an aggressive to moderate interior and exterior sound for enthusiasts who want to be heard
    • Dual 2.50-inch tailpipes finished with 2.50-inch angle-cut brushed stainless steel tips for a clean, muscular look
    • Engineered to improve throttle response, power and mileage, and backed by a 3-year Limited Warranty
    • CARB (California) compliant and purpose-built for 1969 Camaro and Firebird V8 applications
  • Chevrolet, GMC (4.3, 5.3) Exhaust System Kit
    SKU: 817669
    • Aggressive exterior sound with a moderate in-cab tone — performance you hear without droning inside the truck
    • Complete stainless steel catback with mandrel-bent tubing, Super 40 Series muffler, and dual 2.50-inch tailpipes
    • Choose dual rear exit under the bumper or dual side exit behind the rear tires to match your style
    • Bolt-on install using factory hanger locations, with all necessary parts and hardware included
    • CARB (California) compliant and emissions-legal for street-legal peace of mind
    • Finished with large 3.50-inch polished stainless steel tips and backed by a Lifetime Limited Warranty
  • Chevrolet, Pontiac (307, 350, 400, 402, 455) Exhaust System Kit
    SKU: 17149
    • Complete true dual Crossmember-Back system with 2.50-inch mandrel-bent aluminized steel tubing for maximum flow
    • Slimline 50 Series Delta Flow mufflers deliver a moderate to aggressive tone that’s heard inside and out
    • Built-in H-pipe/balance tube helps improve throttle response, power, and mileage
    • Dual 2.50-inch tailpipes finished with angle-cut brushed stainless steel tips for an aggressive look
    • Includes all hangers, U-bolt hardware, and mufflers — designed for 1970-1974 Camaro and Firebird V8
    • CARB (California) compliant and backed by a 3-year Limited Warranty
  • Flowmaster American Thunder Cat-back Exhaust System
    SKU: 17113
    • Super 44 Series mufflers deliver an aggressive, deep and powerful Fox body 5.0L sound
    • Free-flowing 2.50-inch aluminized steel mandrel-bent inlet pipes and dual aluminized tailpipes
    • Bolt-on install using factory hanger locations, with all hardware and instructions included
    • CARB (California) compliant and emissions legal for street-legal peace of mind
    • Fits 1986-1993 Mustang LX and 1986 GT 5.0L coupes and convertibles
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 17104
    • Exclusive 80 Series Crossflow muffler delivers a deep, moderate tone inside and out
    • Complete dual 2.50-inch mandrel-bent system with built-in H-pipe crossover for balanced flow
    • Purpose-fit for 1967-1974 Camaro/Firebird and 1968-1974 Nova classic muscle cars
    • Includes all parts, U-bolt hardware, and illustrated instructions for a straightforward install
    • CARB (California) compliant and backed by Flowmaster’s 3-Year Limited Warranty
    • Aluminized steel construction with the muffler tucked high behind the rear differential for clean clearance
  • Chevrolet, Pontiac (5.7) Exhaust System Kit
    SKU: 17199
    • Deep, powerful sound from the 80 Series Cross-flow muffler with a moderate-to-aggressive exterior tone and mild-moderate interior tone
    • 3.00-inch mandrel-bent aluminized steel inlet and dual tailpipes finished with polished stainless steel tips for a muscular look
    • Improves throttle response, power, and mileage as part of a complete Flowmaster cat-back system
    • Bolts to factory hanger locations with U-Bolt clamps and includes all hardware for easy installation
    • CARB (California) compliant and backed by Flowmaster’s 3-year Limited Warranty
  • Chevrolet, Pontiac (307, 326, 327, 350, 396, 400, 427) Exhaust System Kit
    SKU: 17201
    • True-dual, mandrel-bent 3.00-inch aluminized steel construction with a built-in H-pipe crossover for maximum flow and power
    • Dual Super 40 Series mufflers deliver a deep, powerful, aggressive exhaust note
    • Custom-bent tailpipes tuck high and exit cleanly at the quarter panels for a purposeful look
    • Complete crossmember-back kit includes mufflers, hangers, and U-Bolt hardware for a straightforward install
    • CARB (California) compliant and covered by a 3-year Limited Warranty
    • Purpose-built for 1967-1969 Camaro and Firebird V8s from 307 through 427 cubic inches
  • 1998 Ford Mustang (4.6) Exhaust System Kit
    SKU: 17215
    • Iconic deep, aggressive-to-moderate tone from a pair of Super 44â„¢ Series mufflers
    • Free-flowing 2.50-inch aluminized steel mandrel-bent inlet pipes and dual tailpipes for improved flow
    • Bolts to factory hanger locations with included U-bolt hardware and instructions for easy installation
    • Long 2.50-inch 304 stainless steel tips deliver a genuine show-car look
    • Emissions legal and CARB (California) compliant for the 1998 Mustang GT and Cobra 4.6L
  • Flowmaster American Thunder Crossmember-Back Exhaust System
    SKU: 17119
    • Complete 2.50-inch crossmember-back dual exhaust for most 1964-1972 GM A-body cars
    • Includes a pair of Super 40 Series mufflers for a moderately aggressive exterior and moderate interior tone
    • H-pipe and all mandrel-bent aluminized steel tubing for maximum flow, power, and throttle response
    • Two tailpipe exit style choices with tailpipes tucked up for maximum clearance
    • CARB compliant and backed by Flowmaster’s 3-year Limited Warranty
    • Ships with all necessary parts, hardware, and U-bolt clamps for an easy install
  • Chevrolet, GMC (5.7, 7.4) Exhaust System Kit
    SKU: 17224
    • Deep, moderate exhaust tone from the dual 3.00-inch inlet 50 Series Big Block muffler — powerful without excessive cabin drone
    • Direct-fit cat-back exhaust system for 1996-1999 Chevrolet Silverado / GMC Sierra 2500/3500 with 5.7L or 7.4L engines
    • Towing-ready turndown tip exits behind the right rear wheel with a mandrel-bent aluminized steel tailpipe for smooth flow
    • True bolt-on install using factory hanger locations, with clamps and hardware included for at-home installation
    • CARB compliant and emissions-legal, backed by a 3-year Limited Warranty

Showing 49–72 of 170 results