1991 Ford Mustang Performance Exhaust Products

Product Features:

• Product might not be available in all states due to local laws.

Dynomax® Performance Exhaust, a leading performance exhaust brand built on over 20 years of market leadership. Each and every Dynomax® product is backed by engineers who know what you want and expect out of a performance exhaust product.

Product Features:

• DynoMax® Universal ‘X-Pipes’ feature O.D. sized inlet and outlets allowing for easy fabrication of custom exhaust systems
• Mandrel bends improve flow capacity over traditional bends
• Combine state-of-the-art engineering with quality material to provide exceptional strength and durability
• Dynomax® premium pre-bent pipe is manufactured with precision benders, and then fixture checked, insuring every part is a perfect fit, providing quick and easy installation.
• Pipe diameters are increased from OEM sizes to improve flow and increase power

Product Features:

• Direct Bolt-On Design
• More Horsepower
• Distinctive Sound

Upgraded front pipes for optimized performance.

Product Features:

• Superior flow & performance
• CNC precision robotic manufacturing techniques
• Durable corrosion-resistant stainless steel construction

Hooker Street Force Headers are designed to be a high performance alternative to the stock O.E. manifolds. These headers are built to accommodate all emission control devices. Please check your application in this section for more information regarding emissions legality.

Product Features:

• Long Tube Lengths
• Long Transition Collectors
• Monstrous Low-Mid Range Torque
• Keep Top End Horsepower
• Provides Finest Fit
• Most Durable Design Available

LS1 full length engine swap header fits 66-72 Chevelle, El Camino, Monte Carlo and Sprint applications. Hooker has a complete line of engine swap headers, front frame mounts and transmission mounts for popular engine swaps. Available for Chevy, Chrysler and Ford small block and big block engines. Hooker swap headers and mounts are designed to provide an exact fit when used together. Hooker swap headers add the extra horsepower and torque the serious enthusiast demands. Hooker Headers are the best single improvement you can make.

Product Features:

• High Performance
• Affordable
• Durable 16 Gauge Material
• Welds Easier
• Lasts Longer
• Heat Cured
• High Heat Resistant

Hooker has a complete line of engine swap headers, front frame mounts and transmission mounts for popular engine swaps. Available for Chevy, Chrysler and Ford small block and big block engines. Hooker swap headers and mounts are designed to provide an exact fit when used together. Hooker swap headers add the extra horsepower and torque the serious enthusiast demands. Hooker Headers are the best single improvement you can make.

Product Features:

• Long Tube Lengths
• Long Transition Collectors
• Monstrous Low-Mid Range Torque
• Keep Top End Horsepower
• Provides Finest Fit
• Most Durable Design Available

Product Features:

• Fuel Economy From The Engine
• Leak Test For Max Performance
• Ceramic Headers
• Rust And Corrosion Resistance
• Mandrel-Formed Power Plenum
• Leakproof O-Ringed Port Seals
• Include All Mounting Hardware

The Original 40 series muffler delivers an aggressive exterior and interior tone. If you’re looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.

Product Features:

• Made From Aluminized Case
• Rust And Corrosion Protection
• Stronger Seams Prevent Blow Out
• Provides More Horsepower
• Max Flow In Either Direction
• Powerful Sound With No Resonance
• Limited Lifetime Warranty

Flowmaster’s Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing four-inch case street muffler we’ve ever built! Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.

Product Features:

• Aluminized Steel Construction
• 3in. Inner Pass Tubes
• Reduce Backpressure
• Increase Horsepower
• No Glass To Burn Or Blow Out
• Will Flow In Either Direction
• Welded For Strength/Durability

Afterburner Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound

For the person who is looking for a complete Cat-back dual exhaust system with an quieter tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. Force II systems deliver a moderate exterior tone and moderate to mild interior tone, and are suited to customers looking for efficiency improvements without a lot of noise. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.

For the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.

The MagnaFlow 1986-1993 Ford Mustang Street Series Cat-Back Performance Exhaust System brings out the personality of your 5.0L 1986-1993 Ford Mustang with our signature resonant, powerful engine tone and dyno-proven performance. Thanks to its fast-flowing, mandrel bent 2.5in. main piping and 2 Straight-Through mufflers ending in a Dual Split Rear exit with 3in. Polished Clamp-On Single Wall Angle Cut Cut Edge tips, this Ford Mustang exhaust kit has the performance chops to match its sporty sound and appearance. Upgrade your ride to the next level with an exhaust that has the pipes to put other Ford Mustang’s to shame. With this system your vehicle will be producing Moderate exterior and Mild interior sound levels while leaving other cars and trucks feeling envious at every stoplight. Exhaust kit 15630 features a cat-back layout that replaces your ride’s stock exhaust components from near the catalytic converter on back. Extensive 3D scanning during development has resulted in a direct-fit design that you can easily install yourself. 15630 is produced using CNC precision robotic manufacturing techniques and is backed by MagnaFlow’s 1-year limited finish warranty and limited lifetime construction warranty.

Product Features:

• Dyno-proven performance
• Durable corrosion-resistant stainless steel construction
• CNC precision robotic manufacturing techniques

For the person who is looking for a complete Cat-back dual exhaust system with an quieter tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. Force II systems deliver a moderate exterior tone and moderate to mild interior tone, and are suited to customers looking for efficiency improvements without a lot of noise. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.

The MagnaFlow 1999-2004 Ford Mustang Competition Series Cat-Back Performance Exhaust System 15673 brings an aggressive, attention-grabbing edge to the deep resonant exhaust note we’re so well known for. This exhaust kit is designed to enhance your 4.6L 1999-2004 Ford Mustang with dyno-proven performance made possible thanks to fast-flowing mandrel bent 2.5in. main piping and 2 Straight-Through mufflers ending in a Dual Split Rear exit with 3.5in. Polished Clamp-On Single Wall Angle Cut Cut Edge tips featuring a sporty finish. The exhaust system’s cat-back layout replaces your ride’s exhaust system from near the catalytic converter on back. Exhaust system 15673 is engineered to make your vehicle’s engine produce Aggressive exterior and Moderate interior sound levels, befitting its competition-oriented design. 15673’s direct-fit design makes installation a breeze thanks to the use of advanced 3D scanning techniques. This performance exhaust system is made of 100% durable and corrosion-resistant stainless steel and produced using CNC precision robotic manufacturing, all backed by MagnaFlow’s limited lifetime warranty. Please check to ensure compliance with local noise regulations.

Product Features:

• Crafted from 409 stainless steel with all mandrel-bent tubing
• Increased horsepower and torque
• Aggressive exterior sound

Prebent pipe kits. Flowmaster’s 16 gauge mandrel bent pipe kits are designed to fit perfectly onto your vehicle with all the quality and performance that you would expect from Flowmaster.

Dynomax® Performance Exhaust, a leading performance exhaust brand built on over 20 years of market leadership. Each and every Dynomax® product is backed by engineers who know what you want and expect out of a performance exhaust product.

Product Features:

• Mandrel bends improve flow capacity over traditional bends
• Combine state-of-the-art engineering with quality material to provide exceptional strength and durability
• Dynomax® premium pre-bent pipe is manufactured with precision benders, and then fixture checked, insuring every part is a perfect fit, providing quick and easy installation.
• Pipe diameters are increased from OEM sizes to improve flow and increase power

Prebent pipe kits. Flowmaster’s 16 gauge mandrel bent pipe kits are designed to fit perfectly onto your vehicle with all the quality and performance that you would expect from Flowmaster.

Prebent pipe kits. Flowmaster’s 16 gauge mandrel bent pipe kits are designed to fit perfectly onto your vehicle with all the quality and performance that you would expect from Flowmaster.

Dynomax® Performance Exhaust, a leading performance exhaust brand built on over 20 years of market leadership. Each and every Dynomax® product is backed by engineers who know what you want and expect out of a performance exhaust product.

Product Features:

• Mandrel bends improve flow capacity over traditional bends
• Combine state-of-the-art engineering with quality material to provide exceptional strength and durability
• Dynomax® premium pre-bent pipe is manufactured with precision benders, and then fixture checked, insuring every part is a perfect fit, providing quick and easy installation.
• Pipe diameters are increased from OEM sizes to improve flow and increase power

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

• Performance exhaust header gasket consisting of a high-density fiber facing material attached to both sides of a perforated steel core.
• Resists blowout and burnout from high-temperature exhaust and is far stronger than basic paper gaskets.
• Anti-stick coating permits motion without damaging the gasket and makes it easier to remove the gasket for future engine service.
• Slotted bolt holes allow for easier header installation.
• Not intended for use in emission controlled vehicles.

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

• Performance exhaust header gasket consisting of a high-density fiber facing material attached to both sides of a perforated steel core.
• Resists blowout and burnout from high-temperature exhaust and is far stronger than basic paper gaskets.
• Anti-stick coating permits motion without damaging the gasket and makes it easier to remove the gasket for future engine service.
• Slotted bolt holes allow for easier header installation.
• Not intended for use in emission controlled vehicles.

Mr. Gasket has three types of exhaust gaskets–standard, Ultra Seal, and Copperseal. Use the standard for a stock rebuild and the Ultra or Copperseal for extra blowout protection.

Product Features:

• Designed to provide excellent sealing and durability
• Large fiber gasket material
• Heat resistant
• Reusable
• Precision die cut for excellent fit
• Limited warranty

Graphite impregnated facing and a steel expanded metal core. Superior tensile strength. Resists cracking and withstands intense heat. Resists deteriorating. Anti-stick properties and easy removal for disassembly.

Product Features:

• Graphite-impregnated facing
• Steel expanded metal core
• Superior tensile strength
• Resists cracking
• Withstands intense heat
• Resists deteriorating
• Anti-stick properties
• Easy removal for disassembly

Product Features:

• 0.0625 in. Thickness
• 1.40 in. x 2.04 in. Port Size
• For 390-428 FE Ford V8
• Gray Color
• Two Piece Configuration