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Product Muffler Series
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50 Series HD
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SKU:
817423
Flowmaster American Thunder Cat-back Exhaust System
Deep, aggressive exterior sound with a moderate, livable interior tone from the Super 50 Series muffler
16-gauge mandrel-bent stainless steel tubing with dual 2.50-inch tailpipes and 3.00-inch polished tips
Choose Dual Out Rear for towing or Dual Out Side for a muscular look
Bolt-on install using factory hanger locations with all hardware included
Emissions-legal, CARB (California) compliant, and backed by a Lifetime Limited Warranty
Direct fit for 2006-2008 Ram 1500 5.7L Hemi, 2WD/4WD, all wheelbases except MegaCab
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SKU:
817490
Flowmaster American Thunder Cat-back Exhaust System
Frees up power and sound on 4.7L and 5.7L Hemi 2009-2024* (classic body) RAM 1500 4WD trucks
50 Series HD muffler tunes in an aggressive exterior tone while keeping cab drone to a minimum
Durable 16-gauge mandrel-bent stainless steel tubing with dual polished 3.00-inch tips
Choose dual side exit for towing or straight rear exit for a muscular look
Complete kit with all parts and hardware for an easy at-home install
CARB (California) compliant for legal, worry-free upgrading
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SKU:
17367
Flowmaster American Thunder Cat-back Exhaust System
D.O.S.S. dual-out-same-side design delivers the aggressive NASCAR race truck look and stance
50 Series HD muffler tunes a moderately aggressive exterior sound with a moderate interior tone
Dual 2.50-inch mandrel-bent tailpipes improve throttle response, power, and mileage
Finished with dual 3.00-inch polished stainless steel tips for a clean, high-quality appearance
CARB (California) compliant with all necessary parts and hardware included for easy installation
Backed by a 3-year Limited Warranty
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SKU:
9530560
Flowmaster 50 Series HD Chambered Muffler
Delivers a deeper, moderate exhaust tone with minimal resonance — aggressive sound without the interior drone
Built from 16 gauge aluminized steel and fully MIG welded for maximum durability in heavy duty applications
Designed to improve performance, throttle response and mileage on gas and diesel trucks
Universal fitment with a 3.00-inch inlet makes it adaptable to a wide range of exhaust builds
Ideal for trucks with modified engines that need a tough, free-breathing muffler
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SKU:
9530582
Flowmaster 50 Series HD Chambered Muffler
Improves performance, throttle response, and mileage on heavy duty gas and diesel trucks
Delivers a deeper, moderate tone with minimal resonance — ideal for modified engines
16 gauge aluminized steel body, fully MIG welded for maximum durability
High-temperature paint finish adds heat and corrosion protection
3.00″ inlet with dual outlet and universal fitment for flexible custom builds
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SKU:
9530572
Flowmaster 50 Series HD Chambered Muffler
Deeper, moderate exhaust tone with minimal resonance — aggressive sound without highway drone
Improves performance, throttle response, and mileage on heavy duty gas and diesel trucks
16 gauge aluminized steel, fully MIG welded for maximum durability
High-temperature paint finish stands up to heat and harsh underbody conditions
Universal fit with a 3.00-inch inlet and dual outlet for flexible custom exhaust builds
Ideal for trucks with modified engines that want a purposeful, refined note
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SKU:
953558
Flowmaster 50 Series HD Chambered Muffler
Delivers improved performance, throttle response and mileage for heavy duty gas and diesel trucks
Deeper, moderate tone with minimal resonance — aggressive without cabin drone
Built from 16 gauge aluminized steel and fully MIG welded for maximum durability
Ideal for trucks with modified engines that need reliable, controlled sound
Universal fit with a 3.50-inch inlet for flexible exhaust integration
High-temperature paint finish helps stand up to demanding under-truck conditions
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SKU:
17438
Flowmaster American Thunder Cat-back Exhaust System
Improves performance and fuel economy with free-flowing 16-gauge mandrel-bent aluminized steel tubing and a Super 50 Series muffler
Delivers a moderate, refined exhaust tone both inside and outside the cab — aggressive without excessive drone
Includes two exit styles: straight out the back or side-exit behind the rear wheels, ideal for towing
Bolt-on installation using factory hanger locations, with all hardware and instructions provided
Finished with dual polished 3.00-inch 304 stainless steel tips for a durable, upgraded look
CARB (California) compliant and backed by a 3-year Limited Warranty
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SKU:
817397
Flowmaster American Thunder Cat-back Exhaust System
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
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SKU:
817477
Flowmaster American Thunder Cat-back Exhaust System
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
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SKU:
817513
Flowmaster American Thunder Cat-back Exhaust System
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
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SKU:
817567
Flowmaster American Thunder Cat-back Exhaust System
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
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SKU:
817568
Flowmaster American Thunder Direct Fit Muffler
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
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SKU:
817505
Flowmaster Force II Cat-back Exhaust System
50 Series HD muffler with large 4.00-inch internals delivers a deep, powerful, moderate sound
Dual mandrel-bent 2.50-inch 409 stainless steel tailpipes maximize exhaust flow and durability
Choose straight-out-the-back for a muscular look or side exits ideal for towing
CARB-compliant and emissions-legal, so you gain performance while staying street legal
Complete bolt-on kit includes all hardware for an easy at-home installation
Finished with 3.50-inch polished 304 stainless tips and backed by a Lifetime Limited Warranty
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SKU:
817507
Flowmaster American Thunder Cat-back Exhaust System
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
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SKU:
817541
Flowmaster American Thunder Cat-back Exhaust System
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
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SKU:
817602
Flowmaster American Thunder Cat-back Exhaust System
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
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SKU:
817699
Flowmaster American Thunder Cat-back Exhaust System
Aggressive Flowmaster tone heard inside and outside the cab, powered by a stainless steel 50 Series HD muffler
Mandrel-bent piping with 3.00″ inlet and dual 2.50″ stainless tailpipes to reduce restriction and maximize performance
Polished 3.50″ stainless steel tips with embossed logo for a clean, finished look
True bolt-on DOR/DOS dual-out design that includes the muffler and all installation hardware
Emissions-legal and CARB (California) compliant, backed by Flowmaster’s Lifetime Limited Warranty
Purpose-built fit for 2014-2018 Ram 2500 5.7L V8 Crew Cab Long/Standard Bed models
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SKU:
817709
Flowmaster American Thunder Cat-back Exhaust System
Stainless steel 50 Series HD muffler with 4.00-inch internals delivers moderately aggressive interior and aggressive exterior sound
Dual 3.00-inch mandrel-bent stainless tailpipes reduce restriction and maximize performance
Choose side exits behind the rear wheels for towing or straight-out-the-back exits under the bumper
Emissions-legal and CARB (California) compliant, so it’s street-legal in all 50 states
Complete bolt-on kit with hardware, polished 4.00-inch tips, and easy-to-follow instructions
Backed by Flowmaster’s Lifetime Limited Warranty
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SKU:
817891
Flowmaster American Thunder Cat-back Exhaust System
Aggressive exterior sound with a moderate interior tone thanks to the 50 Series HD muffler
Mandrel-bent 3.50-inch stainless inlet and dual 2.50-inch stainless tailpipes for high flow
Quad 4.00-inch black ceramic coated stainless tips exit through the factory bezel locations for standout style
Bolt-on design uses factory hangers with all parts, hardware, and instructions for easy at-home install
CARB compliant and emissions-legal for the 2019-2023 6.2L Silverado/Sierra 1500 with factory dual exhaust
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SKU:
817701
Flowmaster Force II Cat-back Exhaust System
Delivers a deep, powerful tone at a moderate/mild sound level thanks to the 50 Series HD performance muffler
Dual mandrel-bent 3.00-inch stainless steel tailpipes with 4.00-inch polished stainless tips for max flow and a finished look
CARB compliant and emissions-legal — keeps your 6.2L Super Duty street-legal while adding performance
Your choice of rear under-bumper or side exit behind the rear wheels, ideal for towing
Complete bolt-on kit with all parts and hardware for easy at-home installation
Backed by Flowmaster’s Lifetime Limited Warranty
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SKU:
818176
24-26 Toyota Tacoma (2.4) Exhaust System Kit
Dyno-proven max gains of 14 hp and 21 lb-ft at the rear wheels on the 2.4L Tacoma
Durable 409 stainless steel with 3-inch and 2.5-inch mandrel-bent pipes for improved flow
50 Series HD muffler delivers an aggressive yet moderate tone with reduced drone
Choose dual rear-exit or side-exit, both with 4-inch polished stainless tips
Bolts on with factory-style hangers plus included hardware and instructions for easy at-home install
CARB compliant and backed by Flowmaster’s Lifetime Limited Warranty
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SKU:
817757
Flowmaster Force II Cat-back Exhaust System
Full stainless steel cat-back with a 50 Series HD muffler and dual 3.00-inch mandrel-bent tailpipes for smooth flow and lasting durability
Deep performance tone outside the vehicle with minimal interior drone while cruising — Flowmaster’s quietest series
Two tailpipe exits in one kit: under-bumper for an aggressive look or side-exit to keep exhaust off your boat or trailer when towing
Bolt-on install using factory hanger locations, with instructions and all necessary hardware included for easy at-home fitment
CARB (California) compliant and emissions-legal, finished with large 4.00-inch polished logo-embossed stainless tips
Fits both 2- and 4-wheel drive applications and all wheelbases
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SKU:
817843
Flowmaster American Thunder Cat-back Exhaust System
Deep, aggressive exterior sound with a moderately pleasant interior tone at cruising speeds, thanks to the RAM Hemi-tuned 50 Series HD muffler
Mandrel-bent stainless steel tubing and dual 3.00-inch tailpipes deliver maximum power and efficient flow
Large 4.00-inch black ceramic-coated tips with embossed logo fill the factory bumper cutouts for an aggressive finished look
CARB (California) compliant and emissions legal, backed by Flowmaster’s Lifetime Limited Warranty
Bolt-on install uses factory hangers and includes all necessary parts, hardware, and instructions for an easy at-home fit
Purpose-built fitment for 2019-2024 and 2026 RAM 1500 (New body) 5.7L Hemi models with factory dual tailpipes
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