1999 Grand Prix Performance Exhaust Systems

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    • MagnaFlow® Street Series Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 20206670
      Pontiac Grand Prix GT / GTP 1999, Street Series Stainless Steel Cat-Back Exhaust System by MagnaFlow®, MODERATE SOUND. Quad Split Rear Exit. 2.5" Tubing. 5" H x 8" W x 14" L Muffler. 4" H x 14" L Resonator. 3" Polished Stainless...
      Moderate SoundDelivers More Horsepower
      $1,017.42
    • Corsa® Cat-Back Exhaust System
      (0 reviews)
      # 45867776
      Pontiac Grand Prix 1999, Cat-Back Exhaust System by Corsa®, Dual Rear Exit. Sport Sound. 2.5" Tubing. with Single Tips. The patented Reflective Sound Cancellation (RFC) technology provides a unique combination of a Reserved,...
      Reserved but Distinctive Performance ToneStraight-Through Nonrestrictive Design for Improved Performance and Fuel Economy
      $1,203.56 - $1,300.91
    • DynoMax® Super Turbo™ Cat-Back Exhaust System
      (0 reviews)
      # 18215889
      Pontiac Grand Prix GT / GTP 1999, Super Turbo™ Cat-Back Exhaust System by DynoMax®. 2.5" Tubing. With U-Bolt Pipe. Dyno proven to flow up to 70 SCFM. Get improved exhaust flow and reduced back pressure for better performance, and...
      Constructed to increase horsepower and torque thanks to improved exhaust flowStainless steel Super Turbo muffler will maintain a mellow performance tone
      $460.33
    • MagnaFlow® Direct Fit California OBDII Catalytic Converter
      (0 reviews)
      # 22211781
      Pontiac Grand Prix 3.8L 1999, Direct Fit California OBDII Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. If your car needs replacement, install one that will get you through the smog check and give you more...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $529.60 - $545.50
    • MagnaFlow® Direct Fit Federal OEM Grade Catalytic Converter
      (0 reviews)
      # 61590215
      Pontiac Grand Prix 1999, Direct Fit Federal OEM Grade Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $302.51 - $311.35
    • MagnaFlow® Direct Fit Federal Pre-OBDII Catalytic Converter
      (0 reviews)
      # 61590216
      Pontiac Grand Prix 1999, Direct Fit Federal Pre-OBDII Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. 10" Wide. If your car needs replacement, install one that will get you through the smog check and give you...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $215.85 - $252.75
    • DynoMax® Race Series Muffler
      (0 reviews)
      # 18215764
      Pontiac Grand Prix GT / GTP 1999, Race Series Muffler by DynoMax®. 2.25" Inlet / 2.25" Outlet. 18" Body Length, 4" Body Width, 4" Body Height. CRF Technology which helps provide up to a 4 dbA sound reduction, on most race...
      Unrestricted, straight-through design for a dyno tested and track proven increase in horsepower and torqueEngineered to provide a deep race sound
      $57.93
    • DynoMax® Super Turbo™ Direct Fit Muffler
      (1 reviews)
      # 18221042
      Pontiac Grand Prix GT / GTP 1999, Super Turbo™ Direct Fit Muffler by DynoMax®. 2.25" Offset Inlet / 2.5" Center Outlet. 14" Body Length, 9.75" Body Width, 4.25" Body Height. No Reversible. Get improved exhaust flow and reduced...
      Constructed to increase horsepower and torque thanks to improved exhaust flowAluminized steel Super Turbo muffler maintains a mellow performance tone
      $80.58
    • DynoMax® Polished Exhaust Tip
      (0 reviews)
      # 52153910
      Pontiac Grand Prix GT / GTP 1999, Polished Exhaust Tip by DynoMax®. 2.5" Inlet / 4" Outlet. These clamp-on stainless steel exhaust tips come in a variety of styles and sizes to make it easy for you to bolt on a custom look....
      304 Stainless Steel construction for longevity and corrosion resistanceMirror Polished for a show-like shine
      $30.30
    • DynoMax® Intermediate Pipe
      (0 reviews)
      # 18220145
      Pontiac Grand Prix GT / GTP 1999, Intermediate Pipe by DynoMax®. 2.25" Inlet / 2.25" Outlet. With their great selection of exhaust pipes and accessories, DynoMax will provide you with everything necessary to complete the exhaust...
      Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install
      $17.88 - $49.15
    • DynoMax® Y-Pipe
      (0 reviews)
      # 18216685
      Pontiac Grand Prix GT / GTP 1999, Y-Pipe by DynoMax®. 2.5" Inlet / 2.5" Outlet. 35.12" Overall Length. With their great selection of exhaust pipes and accessories, DynoMax will provide you with everything necessary to complete the...
      Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install
      $82.86
    • Bosal® Right Exhaust Flange Gasket
      (0 reviews)
      # 36898057
      Pontiac Grand Prix 3.1L Inlet 1999, Right Exhaust Flange Gasket by Bosal®. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy. Choose...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $4.68
    • Dorman® Exhaust Manifold
      (0 reviews)
      # 16500329
      Pontiac Grand Prix 1999, Exhaust Manifold by Dorman®, 1 Pieces. Material: Cast Iron. Packaging Type: Box. Color: Unfinished. Standard Replacement. More like a complete kit than a single part, many of the Exhaust Manifolds include...
      Includes heat-shield for protection of hoses, wiring, and other engine componentsCast iron or stainless tubular construction protects against warping and/or cracking
      $52.24 - $111.96
    • Walker® Direct Fit Catalytic Converter
      (0 reviews)
      # 17733702
      Pontiac Grand Prix 1999, Direct Fit Catalytic Converter by Walker®. This catalytic converter is constructed specially for your vehicle to directly replace the original equipment part and comes ready to install. The part is designed...
      Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      $196.15 - $398.11
    • Walker® Universal Fit Catalytic Converter
      (0 reviews)
      # 17742221
      Pontiac Grand Prix 1999, Universal Catalytic Converter by Walker®. This part features the correct load of precious metals to ensure the proper limitation of tailpipe emissions. It is designed to meet the EPA policy and emission...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $85.93 - $148.93
    • Bosal® Catalytic Converter
      (0 reviews)
      # 20581404
      Pontiac Grand Prix 1999, Catalytic Converter by Bosal®. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle manufacturers and use advanced...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      $191.70 - $201.14
    • Eastern® Direct Fit Catalytic Converter
      (0 reviews)
      # 38848371
      Pontiac Grand Prix 1999, Direct Fit Undercar Catalytic Converter by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle,...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $193.49 - $454.78
    • DEC® Direct Fit Catalytic Converter
      (0 reviews)
      # 64466766
      Pontiac Grand Prix 1999, Direct Fit Catalytic Converter by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters are made from a heavy duty...
      Direct fitMade from a heavy duty stainless steel outer shell
      $246.33 - $470.53
    • Walker® Quiet-Flow™ Muffler
      (0 reviews)
      # 35484027
      Pontiac Grand Prix 1999, Quiet-Flow Muffler by Walker®. Together with delivering OE-style sound, the Quiet-Flow Muffler features 100% structural stainless steel construction that resists rust three times longer than aluminized...
      Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire
      $74.68 - $80.64
    • Walker® Resonator
      (0 reviews)
      # 18170645
      Pontiac Grand Prix 1999, Resonator by Walker®. If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability, this part is your number one choice. Every pipe is vehicle-specific and is manufactured...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $65.79 - $107.29
    • Walker® SoundFX™ Direct Fit Muffler
      (0 reviews)
      # 18143275
      Pontiac Grand Prix 1999, SoundFX Direct Fit Muffler by Walker®. This muffler is the right choice if you opt for quality acoustics and performance. Walker offers 100% aluminized steel SoundFX Mufflers with direct fit and universal...
      Designed to deliver ultimate performance and pleasing sound qualityOE-equivalent direct-fit design
      $48.13 - $55.43
    • Walker® Tru-Fit Universal Fit Muffler
      (0 reviews)
      # 18182092
      Pontiac Grand Prix 1999, Tru-Fit Universal Fit Muffler by Walker®. Body Material - Steel, Color / Finish - Aluminized, Dimensions - 15" L x 8.813" W x 4.25" H, Oval Shape, Inlet Diameter - 2" ID, Outlet Diameter - 2" ID, Inlet...
      Economical performance and acousticsUniversal fit allows for greater installation flexibility
      $33.03
    • Dorman® Exhaust Manifold Crossover Pipe
      (0 reviews)
      # 16720227
      Pontiac Grand Prix 1999, Exhaust Manifold Crossover Pipe by Dorman®, 1 Pieces. Packaging Type: Box. Color: Stainless. Product Width: 6". More like a complete kit than a single part, Dorman’s Exhaust Crossover Pipe includes all...
      Comes with two flange bolts and one flange gasket per side for ease of installationRust-resistant for long-lasting performance
      $151.16 - $161.95
    • Walker® Y-Pipe
      (0 reviews)
      # 18183689
      Pontiac Grand Prix 1999, Y-Pipe by Walker®. Finish - Aluminized, 55" Overall Length, 1 Inlets, 2.5" Inside Inlet Diameter, Inlet Connection Type - Pipe Connection, 2 Outlets, 1.875" Outside Outlet Diameter, Outlet Connection Type -...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $127.01
    • Bosal® Exhaust Flange Gasket
      (0 reviews)
      # 20581400
      Pontiac Grand Prix 1999, Exhaust Flange Gasket by Bosal®. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy. Choose Bosal, and you'll...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $7.98 - $8.94
    • Fel-Pro® Exhaust Manifold Gasket Set
      (0 reviews)
      # 40699130
      Pontiac Grand Prix 1999, Exhaust Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources,...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $9.76 - $22.40
    • Victor Reinz® Exhaust Manifold Gasket
      (0 reviews)
      # 24201967
      Pontiac Grand Prix 1999, Exhaust Manifold Gasket by Victor Reinz®, Use 1 per Car. OEM Standard. Material: Multi-Layered Steel. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local...
      $15.90 - $21.53
    • Victor Reinz® Catalytic Converter Gasket
      (0 reviews)
      # 24032790
      Pontiac Grand Prix 3.1L 1999, Catalytic Converter Gasket by Victor Reinz®, Use 1 per Car. Rear. Flange Gasket. OEM Standard. Material: Graphite. When you’re low on oil, coolant or some other fluid, you may be tempted to just run...
      $2.86
    • Dorman® Exhaust Flange Stud and Nut
      (0 reviews)
      # 31712178
      Pontiac Grand Prix 1999, Exhaust Flange Stud and Nut by Dorman®. Dorman’s Exhaust Flange Stud & Nut provides you with the proper flange stud and nut for replacing your manifold. Save time and energy by having the right hardware...
      Direct replacement for a proper fit every timeDurable steel construction
      $6.61
    • Walker® Clamp
      (2 reviews)
      # 18128600
      Pontiac Grand Prix 1999, Clamp 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 Walker...
      Makes installation quick and easyOptimal OE-style fit and quality
      $1.75 - $2.25
    • Walker® Gasket
      (0 reviews)
      # 18151851
      Pontiac Grand Prix 1999, Gasket 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 Walker...
      Makes installation quick and easyOptimal OE-style fit and quality
      $5.75 - $12.88
    • Walker® Insulator
      (0 reviews)
      # 18165625
      Pontiac Grand Prix 1999, Insulator 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 Walker...
      Makes installation quick and easyOptimal OE-style fit and quality
      $1.87 - $6.73
    • Fel-Pro® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 40699087
      Pontiac Grand Prix 1999, Exhaust Pipe Flange Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $9.11 - $12.41
    • Victor Reinz® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 24042686
      Pontiac Grand Prix 3800 CC 1999, Exhaust Pipe Flange Gasket by Victor Reinz®, Use 1 per Car. Exhaust Pipe to Manifold. Flange Gasket. OEM Standard. Material: Steel. When you’re low on oil, coolant or some other fluid, you may be...
      $8.40
    • Victor Reinz® Exhaust Seal Ring
      (0 reviews)
      # 24201970
      Pontiac Grand Prix 1999, Exhaust Seal Ring by Victor Reinz®, Use 1 per Car. OEM Standard. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But before...
      $8.95 - $9.62
    • Flowmaster® 10 Series Delta Force Single Chamber Race Muffler
      (0 reviews)
      # 898490
      Universal 10 Series Delta Force Single Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. The 10 Series Race mufflers are a compact lightweight single chamber design that will give a noticeable sound reduction compared to open...
      Race Proven TechnologyNoticeable Sound Reduction Compared to Open Headers
      $75.62 - $146.90
    • Flowmaster® 30 Series Delta Force™ 3-Chamber Race Muffler
      (0 reviews)
      # 898450
      Universal 30 Series Delta Force™ 3-Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. These are the most powerful and the quietest professional race mufflers available. 5.00” & 6.00” thick case sizes for maximum power and...
      Race Proven TechnologyDelta Force Technology for Maximum Torque and Power
      $128.25 - $267.60
    • Flowmaster® 40 Series Delta Force™ 2-Chamber Race Muffler
      (0 reviews)
      # 898479
      Universal 40 Series Delta Force™ 2-Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. The 40-Series mufflers offer a combination of maximum power and substantial dB-reduction compared to open headers. They are recommended for...
      Race Proven TechnologyDelta Force Technology for Maximum Torque and Power
      $105.98 - $230.86
    • Flowmaster® 60 Series Delta Force Stainless Steel Race Muffler
      (0 reviews)
      # 3146020
      Universal 60 Series Delta Force Stainless Steel Race Muffler by Flowmaster®, MODERATE SOUND, 4" Offset Inlet / 4" Offset Outlet, 22" Length. These are the most powerful and the quietest professional race mufflers available.
      Race Proven TechnologyNoticeable Sound Reduction Compared to Open Headers
      $197.26
    • Flowmaster® Outlaw™ Race Muffler
      (1 reviews)
      # 898456
      Universal Outlaw™ Race Muffler by Flowmaster®, AGGRESSIVE SOUND. These mufflers are very small and lightweight. Attached directly to the collector they generally produce more power than open headers, while taking “the edge”...
      Race Proven TechnologyPure Race Muffler
      $89.00 - $134.32
    • Flowmaster® Pro Series Outlaw™ Race Muffler
      (0 reviews)
      # 62419096
      Universal Pro Series Outlaw™ Race Muffler by Flowmaster®, AGGRESSIVE SOUND. Inlet / Outlet Position: Center. Outlet Diameter: 3". Body Height: 5". Body Width: 5". Body Length: 9". These mufflers are very small and lightweight....
      Race Proven TechnologyPure Race Muffler
      $89.00
    • Flowmaster® Pro Series™ Stainless Steel Race Muffler with Turn Down
      (1 reviews)
      # 898465
      Universal Pro Series™ Stainless Steel Race Muffler with Turn Down by Flowmaster®, MODERATE SOUND, 6" Diameter x 16" Case Length. Laminar Flow Mufflers have applications in all forms of racing. The Cool Shell Technology makes...
      Race Proven Patented Laminar Flow TechnologyProven to Reduce dB Levels with no Reduction of Engine Performance Level
      $188.87
    • Flowmaster® Scavenger Series Outlaw II Race Collector Muffler
      (0 reviews)
      # 23297627
      Universal Scavenger Series Outlaw II Race Collector Muffler by Flowmaster®. These Delta Force Mufflers are designed to attach directly to the exhaust header primary tubes, replacing the collector in sprint and drag racing...
      Race Proven TechnologyAttach to Exhaust Header Primary Tubes
      $187.86 - $208.84
    • Flowmaster® Scavenger Series Race Collector Muffler
      (0 reviews)
      # 898468
      Universal Scavenger Series Race Collector Muffler by Flowmaster®. These Delta Force Mufflers are designed to attach directly to the exhaust header primary tubes, replacing the collector in sprint and drag racing applications. They...
      Race Proven TechnologyAttach to Exhaust Header Primary Tubes
      $167.54
    • Flowmaster® 40 Series Delta Flow™ Muffler
      (2 reviews)
      # 897054
      Universal 40 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The 2-chamber design of this muffler, incorporating the patented Flowmaster Delta Flow...
      The Quietest Option in the 40 Series Two Chamber LineLess Resonance than other 40 Series Mufflers
      $87.08 - $108.08
    • Flowmaster® 40 Series Original Muffler
      (1 reviews)
      # 897079
      Universal 40 Series Original Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. This is the muffler that launched the success of Flowmaster. It is an aggressive sounding...
      The Original High Performance Flowmaster MufflerrAggressive Sound for the Enthusiasts Who Love Their Exhaust to be LOUD
      $81.32 - $160.54
    • Flowmaster® 50 Series Delta Flow™ Muffler
      (1 reviews)
      # 897086
      Universal 50 Series Delta Flow™ Muffler by Flowmaster®, MODERATE SOUND, 4" Thick x 9.75" Wide x 17" Case Length x 23" Overall Length. The 50 Series Delta Flow mufflers are designed for passenger cars. The sound characteristics...
      Three Chamber Delta Flow TechnologyFully MIG-Welded for Maximum Durability
      $107.02 - $120.66
    • Flowmaster® 50 Series Delta Flow™ Slimline Muffler
      (0 reviews)
      # 897156
      Universal 50 Series Delta Flow™ Slimline Muffler by Flowmaster®, MODERATE SOUND. The 50 Series Delta Flow Slimline mufflers are designed for passenger cars. The sound characteristics are moderate exterior sound level and minimal...
      Three Chamber Delta Flow TechnologyFully MIG-Welded for Maximum Durability
      $134.99 - $139.56
    • Flowmaster® 60 Series Delta Flow™ Muffler
      (0 reviews)
      # 897052
      Universal 60 Series Delta Flow™ Aluminized Steel Muffler by Flowmaster®, MILD SOUND, 2.25" Center Inlet / 2.25" Center Outlet, 5" Thick x 10" Wide x 13" Case Length x 19" Overall Length. The 60 Series increases horsepower and...
      A Favorite With Import and Sport Compact OwnersBest When Matched for Four and Six Cylinder Engines
      $131.18
    • Flowmaster® 70 Series Delta Flow™ Big Block Muffler
      (0 reviews)
      # 897109
      Universal 70 Series Delta Flow™ Big Block Muffler by Flowmaster®, MILD SOUND, 5" Thick x 10" Wide x 22" Case Length x 28" Overall Length. The 70 Series Big Block II Muffler uses a longer case for increased volume and added...
      Quiet Muffler for Trucks and Big Power EnginesThree-Chamber Delta Flow Technology
      $152.15
    • Flowmaster® Pro Series™ Laminar Flow Muffler
      (0 reviews)
      # 897161
      Universal Pro Series™ Laminar Flow Muffler by Flowmaster®, MODERATE SOUND. PRO Laminar Flow mufflers have a patented core design that is characterized by efficient exhaust scavenging and minimized drone. They produce a rich, deep...
      The Most Versatile Laminar Flow Technology Muffler OfferedAvailable in Full Size and Shorty Versions
      $146.90 - $205.66
    • Flowmaster® Super 10 Series Delta Flow™ Stainless Steel Muffler
      (5 reviews)
      # 897126
      Universal Super 10 Series Delta Flow™ Stainless Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 5.50" Case Length x 12.50" Overall Length. If you want to be arrested, you should mount this muffler on your...
      The Most Aggressive Muffler Offered by FlowmasterRecommended for Racing Applications Only
      $69.99 - $73.44
    • Flowmaster® Super 40 Series Delta Flow™ Muffler
      (0 reviews)
      # 897132
      Universal Super 40 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 5" Thick x 10" Wide x 13.50" Case Length x 19.50" Overall Length. The Super 40 Series Delta Flow Mufflers are developed from the Top Ten muffler...
      Can Replace Any Other 40-Series MufflerDeeper and Richer Tone than Original 40 Series Muffler
      $104.92 - $109.49
    • Flowmaster® Super 44 Series Delta Flow™ Muffler
      (5 reviews)
      # 897136
      Universal Super 44 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The Super 44 has the deepest, richest, most aggressive muscle tone of all 4” street...
      Deep, Aggressive, High Performance Exhaust NoteTwo-Chamber Design for Power and Torque Increase
      $83.90 - $94.44
    • Flowmaster® Super HP-2™ Stainless Steel Performance Muffler
      (0 reviews)
      # 15943155
      Universal Super HP-2™ Stainless Steel Performance Muffler by Flowmaster®, 4" Thick x 5" Wide. The new Super HP-2 Series muffler offers the same great performance benefits and moderate tone that you would expect from our laminar...
      Moderate tone - perfect for performance and passenger cars409S Stainless Steel version backed by lifetime warranty
      $110.18 - $178.38
    • Flowmaster® Resonator
      (0 reviews)
      # 898502
      Universal Resonator by Flowmaster®. The resonators are designed for use in conjunction with Flowmaster Mufflers for improved sound reduction and minimize interior resonance.
      Reduce Interior ResonanceWork with Flowmaster Mufflers
      $79.68 - $124.88
    • MagnaFlow® Glass Pack Red Coated Aluminized Steel Muffler
      (0 reviews)
      # 61459909
      Universal Glass Pack Red Coated Aluminized Steel Muffler by MagnaFlow®. The Glass Pack Mufflers have the same high performance optimizing, straight-through design as the more expensive MagnaFlow mufflers. They are made in...
      Red Coated 100% aluminized steelNon-fiberglass acoustic packing material
      $35.14 - $51.26
    • Borla® S-Type™ Stainless Steel Round Muffler
      (12 reviews)
      # 25728287
      Universal S-Type™ Stainless Steel Round Muffler by Borla®. Get increased performance and the aggressive sound of power with this Universal S-Type Muffler. This is the same style austenitic stainless steel straight through muffler...
      Increased exhaust flow for better performanceDefinite performance tone at cruise with a throaty, aggressive sound during acceleration
      $175.99
    • Borla® XR-1™ Multicore Stainless Steel Race Muffler
      (0 reviews)
      # 959705
      Universal XR-1™ Multicore Stainless Steel Race Muffler by Borla®. The Borla XR-1 Multi-Core Muffler was developed on the race track to quiet the most severe engine noise without restricting power. They work so well that they're...
      The most possible exhaust flow in a muffler for maximum performanceQuiets the most severe engine noise, leaving a pronounced sound of power
      $244.99 - $469.99
    • Borla® Heavy Duty Stainless Steel Round Muffler
      (0 reviews)
      # 25728296
      Universal Heavy Duty Stainless Steel Round Muffler by Borla®, 3" Center Inlet / 3" Center Outlet. Get increased performance and the aggressive sound of power with this Heavy Duty Stainless Steel Round Muffler. This muffler includes...
      Increased exhaust flow for better performanceDefinite performance tone at cruise with a throaty, aggressive sound during acceleration
      $209.99



    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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    1999 Pontiac Grand Prix Models
    • 1999 Pontiac Grand Prix GT Performance Exhaust Systems
    • 1999 Pontiac Grand Prix GTP Performance Exhaust Systems
    • 1999 Pontiac Grand Prix SE Performance Exhaust Systems