1991 Ford Mustang Performance Exhaust Systems

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    • Flowmaster® American Thunder™ Dual Cat-Back Exhaust System
      (2 reviews)
      # 573874
      Ford Mustang 5.0L 1991, American Thunder™ Dual Cat-Back Exhaust System by Flowmaster®, AGGRESSIVE SOUND. Super 44 Series Mufflers. 2.5" Tubing. American Thunder gives you the classic AGGRESSIVE or MODERATE sound (depends on...
      Available sound levels: Aggressive Sound / Moderate Sound (depends on application and exhaust typeIncreases Power
      $341.06 - $515.54
    • Flowmaster® Force II™ Dual Cat-Back Exhaust System
      (0 reviews)
      # 41559226
      Ford Mustang 1991, Force II™ Aluminized Steel Dual Cat-Back Exhaust System by Flowmaster®, MODERATE SOUND. 50 Series Delta Flow Mufflers. Dual Rear Exit. 2.5" Tubing. The Force II Series is designed for a mild, or mild - moderate...
      Available sound levels: Mild Sound / Mild - Moderate Sound (depends on application and exhaust type)Increases Power
      $451.22 - $535.18
    • MagnaFlow® Street Series Cat-Back Exhaust System
      (0 reviews)
      # 20209202
      Ford Mustang 5.0L 1991, Street Series Cat-Back Exhaust System by MagnaFlow®, MODERATE SOUND. The Street Series is designed for customers seeking increased performance and better economy, combined with a powerful and well tuned...
      Moderate SoundDelivers More Horsepower
      $577.19
    • MagnaFlow® Competition Series Cat-Back Exhaust System
      (0 reviews)
      # 20209199
      Ford Mustang 5.0L 1991, Competition Series Cat-Back Exhaust System by MagnaFlow®, AGGRESSIVE SOUND. The Competition Series is designed for customers seeking maximum performance, reduced mass and an aggressive exhaust note that...
      Aggressive SoundDelivers More Horsepower
      $640.17 - $647.07
    • MagnaFlow® Off-Road Pro Series Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 1678637
      Ford Mustang 5.0L 1991, Off-Road Pro Series Stainless Steel Cat-Back Exhaust System by MagnaFlow®, MODERATE TO AGGRESSIVE SOUND. Turn Down In Front Of Rear Tire Exit. 2.5" Tubing. 4" H x 14" L Muffler. 2.5" Turndown Tip. The Off...
      $488.53
    • Borla® S-Type™ Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 1221278
      Ford Mustang GT 1991, S-Type™ Stainless Steel Cat-Back Exhaust System by Borla®, AGGRESSIVE SOUND, Split Rear Exit. 2.25" Inlet Turndown / Turnout Tips. 2" Tubing. When you want the best performing, best sounding, and highest...
      Aggressive Plus SoundIncreased exhaust flow for better performance
      $580.99
    • BBK® Varitune Cat-Back Exhaust Kit
      (0 reviews)
      # 55186398
      Ford Mustang 1991, Varitune Cat-Back Exhaust Kit by BBK®. This revolutionary performance muffler is fully adjustable for sound and horsepower. It transforms from a mild three-chamber to a more radical straight-through design by...
      Fully adjustable performance mufflersCan be adjusted for horsepower and sound
      $449.99 - $499.99
    • DynoMax® Super Turbo™ Cat-Back Exhaust System
      (0 reviews)
      # 18220508
      Ford Mustang 1991, Super Turbo™ Cat-Back Exhaust System by DynoMax®. Dyno proven to flow up to 70 SCFM. Get improved exhaust flow and reduced back pressure for better performance, and a mellow performance exhaust tone without...
      Constructed to increase horsepower and torque thanks to improved exhaust flowStainless steel Super Turbo muffler will maintain a mellow performance tone
      $241.00 - $303.54
    • DynoMax® Ultra Flo™ Cat-Back Exhaust System
      (0 reviews)
      # 18222450
      Ford Mustang 5.0L 1991, Ultra Flo™ Cat-Back Exhaust System by DynoMax®. Rear Exit. 2.5" Tubing. CRF Technology absorbs unwanted interior resonance while maintaining a deep performance tone. This system includes pipes, clamps,...
      Unrestricted, straight-through design for a dyno-proven increase in horsepower and torqueUltra Flo Polished mufflers will give your car a deep performance tone
      $303.60 - $334.79
    • DynoMax® Ultra Flo™ Cat-Back Welded Exhaust System
      (0 reviews)
      # 18222864
      Ford Mustang 1991, Ultra Flo™ Cat-Back Welded Exhaust System by DynoMax®. Rear Exit. 2.5" Tubing. Dyno proven to flow up to 2 SCFM and support up to 2 horsepower. This cat-back exhaust system includes pipes, clamps, tip, and...
      Unrestricted, straight-through design for a dyno-proven increase in horsepower and torqueUltra Flo Welded muffler will give your car a deep performance tone
      $239.08 - $377.45
    • Flowmaster® Scavenger Series Elite Shorty Header
      (0 reviews)
      # 15657855
      Ford Mustang 5.0L 1991, Scavenger Series Elite Shorty Header by Flowmaster®. Replace your restrictive factory exhaust manifolds with these stainless steel headers and let your engine breath! Their long tube design will unleash the...
      Increases horsepower and torqueImproves engine efficiency and throttle response
      $629.00
    • Flowmaster® Scavenger Series Shorty Elite Headers
      (0 reviews)
      # 1257342
      Ford Mustang 5.0L 1991, Scavenger Series Ceramic Coated Shorty Elite Headers by Flowmaster®, 2.25" Outlet. 1.63" Tubing. Includes Bolts and Studs. Replace your restrictive factory exhaust manifolds with these stainless steel...
      Increases horsepower and torqueImproves engine efficiency and throttle response
      $549.00
    • MagnaFlow® Ceramic Coated Performance Header
      (0 reviews)
      # 49303728
      Ford Mustang 5.0L 1991, Ceramic Coated Performance Header by MagnaFlow®, 1.75" Tubing. Includes Drivers / Passenger Side, Hardware Kit. These headers are a cost effective an easy way to boost your vehicle's horsepower and torque in...
      Increases Horsepower and Torque to your engineDurable Stainless Steel Ceramic Coated Construction
      $770.45
    • BBK® CNC-Series™ Headers
      (0 reviews)
      # 55186371
      Ford Mustang 5.0L Standard Transmission 1991, CNC-Series™ Headers by BBK®. Gain 15-20 dyno-proven horsepower at the rear wheels just by bolting on a set of BBK long tube, full length headers. These premium headers are CAD...
      Dyno testing results show a typical increase of 15-20 horsepower at the rear wheelsDeveloped using CAD (Computer Aided Design) software
      $369.99 - $549.99
    • BBK® Full Length Headers
      (0 reviews)
      # 55186361
      Ford Mustang 5.0L Automatic Transmission 1991, Full Length Headers by BBK®. 1.63" Diameter. Gain 30 plus dyno-proven horsepower just by bolting on a set of BBK long tube, full length headers. These premium headers are CAD designed...
      Dyno Testing Results Show a Typical Increase of 30 HorsepowerCNC Mandrel Bent Tubes to Ensure Consistent Diameter throughout the Tubes
      $439.99 - $549.99
    • BBK® Coyote Swap Headers
      (0 reviews)
      # 55186401
      Ford Mustang 5.0L 1991, Coyote Swap Headers by BBK®. Get at least 10 more ponies from your engine with an easy bolt-on installation. These shorty exhaust headers are direct replacements for your factory exhaust manifolds and will...
      Developed using CAD (Computer Aided Design) software and dyno-tested for maximum horsepowerAvailable with equal length and unequal length tubes
      $569.99 - $749.99
    • BBK® Premium Series™ Headers
      (0 reviews)
      # 55186375
      Ford Mustang 5.0L 1991, Premium Series™ Headers by BBK®. 1.63" Diameter. Get at least 10 more ponies from your engine with an easy bolt-on installation. These shorty exhaust headers are direct replacements for your factory...
      Developed using CAD (Computer Aided Design) software and dyno-tested for maximum horsepowerAvailable with equal length and unequal length tubes
      $199.99 - $369.99
    • Kooks® Green Catted Stainless Steel Mid-Length Headers
      (0 reviews)
      # 64455532
      Ford Mustang Ford Engine 5.8L 1991, Green Catted Stainless Steel Mid-Length Headers by Kooks®. 1.75" Inlet / 3" Outlet. New style cylinder heads. Gaskets, and all installation hardware included. designed for stock bolt pattern 23...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $1,077.71
    • Kooks® K-Member Headers
      (0 reviews)
      # 64455536
      Ford Mustang 1991, K-Member Headers by Kooks®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Kooks will last a...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $370.79
    • Kooks® Mild Steel Long Tube Headers
      (0 reviews)
      # 64456503
      Ford Mustang 1991, Mild Steel Long Tube Headers by Kooks®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Kooks...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $701.97 - $1,344.15
    • Kooks® Race Catted Stainless Steel Long Tube Headers
      (0 reviews)
      # 64455533
      Ford Mustang Chevy Engine Small Block 1991, Race Catted Stainless Steel Long Tube Headers by Kooks®. 1.875" Inlet / 3.5" Outlet. Gaskets and all installation hardware included. This product is made of high-quality materials to...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $1,036.16
    • Kooks® Stainless Steel Drag Pack Headers
      (0 reviews)
      # 64455531
      Ford Mustang Ford Engine 5.8L 1991, Stainless Steel Drag Pack Headers by Kooks®. 2" Inlet / 3.5" Outlet. Adapter kit #7010-kit, gaskets, and all installation hardware included. This product is made of high-quality materials to...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $1,240.82
    • Kooks® Stainless Steel Headers
      (0 reviews)
      # 64456538
      Ford Mustang Ford Engine 1991, Stainless Steel Headers by Kooks®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $1,020.14 - $1,344.15
    • Kooks® Stainless Steel Long Tube Headers
      (0 reviews)
      # 64456544
      Ford Mustang 1991, Stainless Steel Long Tube Headers by Kooks®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $701.98 - $1,622.25
    • Kooks® Stainless Steel Mid-Length Headers
      (0 reviews)
      # 64455535
      Ford Mustang Ford Engine 5.0L 1991, Stainless Steel Mid-Length Headers by Kooks®. 1.75" Inlet / 3" Outlet. Gaskets, and all installation hardware included. designed for stock bolt pattern 23 degree heads. This product is made of...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $1,020.14
    • Kooks® Steel Headers
      (0 reviews)
      # 64456582
      Ford Mustang Ford Engine 1991, Steel Headers by Kooks®. Gaskets and all installation hardware included. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $1,045.56 - $1,344.15
    • Kooks® Swap Mild Steel Long Tube Headers
      (0 reviews)
      # 64455534
      Ford Mustang Chevy Engine Small Block 1991, Swap Mild Steel Long Tube Headers by Kooks®. 2" Inlet / 3.5" Outlet. Gaskets and all installation hardware included. This product is made of high-quality materials to serve you for years...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $701.98
    • Kooks® Swap Stainless Steel Long Tube Headers
      (0 reviews)
      # 64456588
      Ford Mustang Chevy Engine Small Block 1991, Swap Stainless Steel Long Tube Headers by Kooks®. Gaskets and all installation hardware included. This product is made of high-quality materials to serve you for years to come. Designed...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $1,036.16
    • Flowtech® Long Tube Headers
      (0 reviews)
      # 64825580
      Ford Mustang 5.0L Fuel Injection MFI 1991, by Flowtech®, Include all mounting hardware. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $156.95
    • Flowtech® Shorty Headers
      (0 reviews)
      # 64825571
      Ford Mustang 5.0L Fuel Injection MFI 1991, by Flowtech®, Include all mounting hardware. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $210.95 - $340.95
    • Hooker® Super Competition™ Full Length Header
      (0 reviews)
      # 64182902
      Ford Mustang 5.0L 1991, Super Competition™ Full Length Header by Hooker®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $565.95 - $810.95
    • Hooker® Super Competition™ Shorty Header
      (0 reviews)
      # 64182911
      Ford Mustang 5.0L 1991, Super Competition™ Shorty Header by Hooker®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $320.95
    • Flowmaster® Direct Fit Stainless Steel Catalytic Converter
      (0 reviews)
      # 34448986
      Ford Mustang 5.0L 1991, Direct Fit Stainless Steel Catalytic Converter by Flowmaster®, 2.25" Inlet / 2.25" Outlet. 52" Length. 30" Width. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal...
      Exceed all federal emission standardsStainless Steel shells
      $423.86
    • Flowmaster® 220 Series Stainless Steel Oval Catalytic Converter
      (1 reviews)
      # 868716
      Ford Mustang 5.0L 1991, 220 Series Stainless Steel Oval Catalytic Converter by Flowmaster®, 2.25" Inlet / 2.25" Outlet. 14" Length. 6.13" Width. Includes Heat Shield, Air Tube, 4 Bolt Flanges. Without Hangers. The new Flowmaster...
      Exceed all federal emission standardsStainless Steel shells
      $66.56
    • MagnaFlow® Direct Fit Federal Catalytic Converter
      (0 reviews)
      # 22205513
      Ford Mustang 5.0L 1991, Direct Fit Federal Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. 26.88" Wide. If your car needs replacement, install one that will get you through the smog check and give you more...
      Converter body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $642.69
    • MagnaFlow® Direct Fit Pre-OBDII Catalytic Converter
      (0 reviews)
      # 61588469
      Ford Mustang 1991, Direct Fit Pre-OBDII Catalytic Converter by MagnaFlow®. Without Air Tube. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $245.49 - $995.67
    • Flowmaster® 40 Series Delta Force™ Muffler
      (0 reviews)
      # 849837
      Ford Mustang 5.0L 1991, 40 Series Delta Force™ Aluminized Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Offset Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. This is the muffler...
      The Original High Performance Flowmaster MufflerAggressive Sound for the Enthusiasts Who Love Their Exhaust to be LOUD
      $81.32
    • Flowmaster® 40 Series Original Stainless Steel Muffler
      (0 reviews)
      # 849836
      Ford Mustang 5.0L 1991, 40 Series Original Stainless Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Offset Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. This is the muffler that...
      The Original High Performance Flowmaster MufflerAggressive Sound for the Enthusiasts Who Love Their Exhaust to be LOUD
      $87.08
    • Flowmaster® 50 Series Delta Flow™ Muffler
      (1 reviews)
      # 849919
      Ford Mustang 5.0L 1991, 50 Series Delta Flow™ Muffler by Flowmaster®, MODERATE SOUND, 2.25" Offset Inlet / 2.25" Offset Outlet, 4" Thick x 9.75" Wide x 17" Case Length x 23" Overall Length. The 50 Series Delta Flow mufflers are...
      Three Chamber Delta Flow TechnologyFully MIG-Welded for Maximum Durability
      $107.02 - $120.66
    • Flowmaster® Super 44 Series Delta Flow™ Muffler
      (0 reviews)
      # 850128
      Ford Mustang 5.0L 1991, Super 44 Series Delta Flow™ Aluminized Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Offset Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The Super 44...
      Deep, Aggressive, High Performance Exhaust NoteTwo-Chamber Design for Power and Torque Increase
      $83.90
    • Hooker® Aero Chamber™ Muffler (Single 2.5" Offset Inlet, Single 2.5" Offset Outlet)
      (0 reviews)
      # 64168188
      Ford Mustang 1991, Aero Chamber™ Muffler by Hooker®. 4.75"H x 10.25"W x 14"L. Universal Turbo Style. Uncoated. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $76.33
    • DynoMax® Super Turbo™ Direct Fit Muffler
      (0 reviews)
      # 18220867
      Ford Mustang 5.0L 1991, Super Turbo™ Direct Fit Muffler by DynoMax®. 14" Body Length, 9.75" Body Width, 4.25" Body Height. No Reversible. Get improved exhaust flow and reduced back pressure for better performance, and a mellow...
      Constructed to increase horsepower and torque thanks to improved exhaust flowAluminized steel Super Turbo muffler maintains a mellow performance tone
      $75.64 - $86.45
    • DynoMax® Ultra Flo™ Direct Fit Muffler
      (0 reviews)
      # 51847698
      Ford Mustang 5.0L 1991, Ultra Flo™ Direct Fit Muffler by DynoMax®. This muffler packs straight-through design for unrestricted exhaust flow and a dyno-proven increase in power inside a polished stainless steel shell that delivers...
      Unrestricted, straight-through design for a dyno-proven increase in horsepower and torqueEngineered to give your car a deep performance tone
      $145.60
    • DynoMax® Ultra Flo™ Welded Muffler
      (0 reviews)
      # 18216499
      Ford Mustang 5.0L 1991, Ultra Flo™ Welded Muffler by DynoMax®. 2.5" Offset Inlet / 2.5" Offset Outlet. 14" Body Length, 9.75" Body Width, 4.5" Body Height. Right Side / Left Side. Reversible. Dyno proven to flow up to 2 SCFM and...
      Unrestricted, straight-through design for a dyno-proven increase in horsepower and torqueEngineered to give your car a deep performance tone
      $66.71
    • Flowmaster® Prebend Tailpipes
      (0 reviews)
      # 869722
      Ford Mustang 1991, Prebend Tailpipes by Flowmaster®, 1 Pair, Rear Exit. These tailpipes are bare dual-out rear exit pipes and are sold in pairs. Hardware and hangers are not included in kit. Fitments for many popular Classic Cars...
      Sold in PairsHangers and Hardware Not Included
      $147.96 - $278.08
    • BBK® eXtracter Series™ High-Flow Mid X-Pipe
      (0 reviews)
      # 55186360
      Ford Mustang 5.0L 1991, eXtracter Series™ High-Flow Mid X-Pipe by BBK®. 2.5" Diameter. X-pipes increase exhaust flow to gain horsepower by allowing both cylinder banks to make use of both sides of the exhaust system. These...
      Provides optimal exhaust flow for the most possible increase in horsepower while retaining an exhaust systemX-pipe allows exhaust from both banks to exit using both sides of the exhaust system, for the least restriction and greatest exhaust flow
      $199.99 - $379.99
    • BBK® Off-Road X-Pipe Assembly
      (0 reviews)
      # 10960126
      Ford Mustang 5.0L 1991, Off-Road X-Pipe Assembly by BBK®. X-pipes increase exhaust flow to gain horsepower by allowing both cylinder banks to make use of both sides of the exhaust system. These high-flow X-pipes are constructed...
      Dyno testing shows solid gains of 15-20 horsepower depending on applicationProvides optimal exhaust flow for the most possible increase in horsepower while retaining an exhaust system
      $209.99
    • BBK® X-Pipe Assembly with Converters
      (0 reviews)
      # 10960127
      Ford Mustang 5.0L 1991, X-Pipe Assembly with Converters by BBK®. X-pipes increase exhaust flow to gain horsepower by allowing both cylinder banks to make use of both sides of the exhaust system. These high-flow X-pipes are...
      Dyno testing shows solid gains of 15-20 horsepower depending on applicationProvides optimal exhaust flow for the most possible increase in horsepower while retaining an exhaust system
      $419.99
    • BBK® High-Flow Short H-Pipe Assembly with Converters
      (0 reviews)
      # 10960145
      Ford Mustang 5.0L 1991, High-Flow Short H-Pipe Assembly with Converters by BBK®. H-pipes increase exhaust flow to gain horsepower by allowing both cylinder banks to make use of both sides of the exhaust system. These high-flow...
      Provides optimal exhaust flow for the most possible increase in horsepower while retaining an exhaust systemH-pipe allows exhaust from both banks to exit using both sides of the exhaust system, for the least restriction and greatest exhaust flow
      $439.99
    • BBK® High-Flow Short Off-Road H-Pipe Assembly
      (0 reviews)
      # 10960144
      Ford Mustang 5.0L 1991, High-Flow Short Off-Road H-Pipe Assembly by BBK®. H-pipes increase exhaust flow to gain horsepower by allowing both cylinder banks to make use of both sides of the exhaust system. These high-flow H-pipes are...
      Provides optimal exhaust flow for the most possible increase in horsepower while retaining an exhaust systemH-pipe allows exhaust from both banks to exit using both sides of the exhaust system, for the least restriction and greatest exhaust flow
      $189.99
    • BBK® High-Flow Stainless Steel H-Pipe Assembly with Converters
      (0 reviews)
      # 10961150
      Ford Mustang 5.0L 1991, High-Flow Stainless Steel H-Pipe Assembly with Converters by BBK®. These large diameter mid-pipes are designed to connect BBK full length, long tube headers to the factory X-Pipe exhaust system. They’re...
      Makes it easy to connect BBK full length, long tube headers to the stock exhaust systemLarge diameter tubes are CNC mandrel bent to maintain consistent flow throughout the length of the tube
      $369.99
    • BBK® Stainless Steel Off-Road H-Pipe Assembly
      (0 reviews)
      # 10961151
      Ford Mustang 5.0L 1991, Stainless Steel Off-Road H-Pipe Assembly by BBK®. These large diameter mid-pipes are designed to connect BBK full length, long tube headers to the factory X-Pipe exhaust system. They’re made from durable,...
      Makes it easy to connect BBK full length, long tube headers to the stock exhaust systemLarge diameter tubes are CNC mandrel bent to maintain consistent flow throughout the length of the tube
      $144.99
    • BBK® High-Flow Aluminized Steel X-Pipe with Converters
      (0 reviews)
      # 10961170
      Ford Mustang 5.0L 1991, High-Flow Aluminized Steel X-Pipe with Converters by BBK®. Reduce restriction and increase exhaust flow for more power and better performance, with these large diameter high-flow exhaust tubes. X-pipes...
      Provides optimal exhaust flow for the most possible increase in horsepower while retaining an exhaust systemX-pipe allows exhaust from both banks to exit using both sides of the exhaust system, for the least restriction and greatest exhaust flow
      $479.99
    • BBK® Off-Road X-Pipe
      (0 reviews)
      # 55186397
      Ford Mustang 5.0L 1991, Off-Road X-Pipe by BBK®. Reduce restriction and increase exhaust flow for more power and better performance, with these large diameter high-flow exhaust tubes. X-pipes increase exhaust flow to gain...
      Provides optimal exhaust flow for the most possible increase in horsepower while retaining an exhaust systemX-pipe allows exhaust from both banks to exit using both sides of the exhaust system, for the least restriction and greatest exhaust flow
      $219.99 - $249.99
    • BBK® X-Pipe Assembly with Converters
      (0 reviews)
      # 10961554
      Ford Mustang 5.0L 1991, X-Pipe Assembly with Converters by BBK®.
      $409.99
    • Flowtech® Performance H-Pipe
      (0 reviews)
      # 64825583
      Ford Mustang 5.0L Fuel Injection MFI 1991, H-Pipe by Flowtech®, 2.5" Diameter / 2.5" Diameter Collector. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $189.95 - $195.95
    • DynoMax® Intermediate Pipe
      (0 reviews)
      # 18219735
      Ford Mustang 5.0L 1991, Intermediate Pipe by DynoMax®. With their great selection of exhaust pipes and accessories, DynoMax will provide you with everything necessary to complete the exhaust job. Every component is manufactured...
      Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install
      $18.60 - $30.54
    • DynoMax® X-Pipe Kit
      (0 reviews)
      # 18216650
      Ford Mustang 5.0L 1991, X-Pipe Kit by DynoMax®. With their great selection of exhaust pipes and accessories, DynoMax will provide you with everything necessary to complete the exhaust job. Every component is manufactured from...
      Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install
      $183.38
    • DynoMax® Tail Pipe
      (0 reviews)
      # 18221838
      Ford Mustang 5.0L 1991, Tail Pipe by DynoMax®. 2.5" Inlet / 2.5" Outlet. With their great selection of exhaust pipes and accessories, DynoMax will provide you with everything necessary to complete the exhaust job. Every component...
      Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install
      $54.53 - $141.35
    • Walker® Chrome Bracket
      (0 reviews)
      # 60804431
      Ford Mustang 5.0L 1991, Chrome Bracket by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose...
      Makes installation quick and easyOptimal OE-style fit and quality
      $6.98



    Guides & Articles
    Engines have often been compared to air pumps, because the engine that’s most efficient in terms of economy and power is the one that can get air in and out of its cylinders the easiest. That’s why most performance modifications like conical air filters, cold air intake systems, headers, and cat-back exhaust systems are aimed at making the intake and exhaust...
    You may be wondering why so many aftermarket performance exhaust system manufacturers are offering dual exhaust systems connected by "H-pipe" or "X-pipe" sections. After all, aren't two separate pipes, or so-called "true duals", the best for performance? The answer is no, but to understand why we have to examine how a typical internal combustion engine works.
    It's an age-old question that many have asked. Will an aftermarket exhaust be worth the expense? While they definitely can be, an important question to ask yourself is do you care more about the deeper sound they’re designed to produce, or the added performance gained from being less restrictive? As car enthusiasts, we’ve become accustomed to associating the...
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    1991 Ford Mustang Performance Exhaust Systems Reviews
    Average rating: 5 4.8 - 1 reviews
    (4.8)
    APPEARANCE
    EASE OF INSTALLATION
    PRICE/VALUE
    QUALITY
    2013 Ford Mustang | Posted by Kam | (Sterling Heights, MI)

    The quality of this Corsa XO-pipe is great. The fitment is good and the material is definite stainless steel. Corsa website listed as only for 2013-2014 GT500 5.8-L SC engine, but it will work on the 2011-2012 GT500 with 5.4-L Sc engine also. For those who want a XO-pipe on 2011-2014 GT500 but still want to keep the factory cats for emission, this is the way to go.

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