Performance Mufflers
Upgrade your exhaust sound and add horsepower with performance mufflers. Our selection includes glasspacks for aggressive tone, chambered mufflers for deep sound, and turbo-style for quiet performance.
Why Performance Mufflers?
Factory mufflers prioritize silence over performance. Performance mufflers reduce backpressure, improve exhaust flow, and deliver the exhaust note you want - from subtle to aggressive.
Shop by Type
- Glasspacks - Maximum sound, straight-through design
- Chambered Mufflers - Deep tone, reduced drone
- Turbo Mufflers - Quiet performance gains
- Universal Mufflers - Fits most applications
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Flowmaster 80 Series Cross-Flow Muffler 425404
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The Flowmaster 425404 80 Series Cross-Flow Muffler delivers superior exhaust flow and an aggressive, unmistakable...
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Flowmaster 80 Series Cross-Flow Muffler 425403
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The Flowmaster 425403 80 Series Cross-Flow Muffler delivers superior exhaust flow and an aggressive, unmistakable...
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Flowmaster 80 Series Cross-Flow Muffler 325108
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Flowmaster 70 Series Big Block Muffler 72198
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Flowmaster 70 Series Big Block Muffler 71236
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The Flowmaster 71236 70 Series Big Block Muffler delivers superior exhaust flow and an aggressive,...
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Flowmaster 70 Series Big Block Muffler 71235
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The Flowmaster 71235 70 Series Big Block Muffler delivers superior exhaust flow and an aggressive,...
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Flowmaster 70 Series Big Block Muffler 71229
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The Flowmaster 71229 70 Series Big Block Muffler delivers superior exhaust flow and an aggressive,...
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Flowmaster 70 Series Big Block Muffler 71226
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The Flowmaster 71226 70 Series Big Block Muffler delivers superior exhaust flow and an aggressive,...
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Flowmaster 70 Series Big Block Muffler 71225
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The Flowmaster 71225 70 Series Big Block Muffler delivers superior exhaust flow and an aggressive,...
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Flowmaster 50 Series Delta Flow Muffler 53553
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The Flowmaster 53553 50 Series Delta Flow Muffler delivers superior exhaust flow and an aggressive,...
Flowmaster 50 Series Delta Flow Muffler 53077
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The Flowmaster 53077 50 Series Delta Flow Muffler delivers superior exhaust flow and an aggressive,...
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Flowmaster 50 Series Delta Flow Muffler 53071
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Frequently Asked Questions
Will a performance muffler add horsepower to my vehicle?
Yes, performance mufflers typically add 2-10 horsepower by reducing exhaust backpressure and improving flow. The exact gains depend on your engine size, existing exhaust setup, and the muffler design. Larger engines like V8s see more noticeable gains. However, the primary benefit most owners notice is improved throttle response and a more aggressive exhaust note.
What's the difference between chambered, turbo, and straight-through performance mufflers?
Chambered mufflers use internal baffles to create a deep, tuned muscle-car sound with good drone control. Turbo mufflers use an S-tube path for quiet performance with minimal cabin noise. Straight-through (glasspack) mufflers have a perforated core for maximum flow and the loudest, most aggressive sound. Choose based on your sound preference and daily driving needs.
How do I choose the right performance muffler size for my vehicle?
Match the muffler inlet size to your existing exhaust pipe diameter. Most 4-cylinder and V6 vehicles use 2.25-2.5 inch pipes, while V8 trucks and performance cars typically use 2.5-3 inch. Measure your current exhaust pipe's outside diameter (OD) to find the correct fit. Going too large can actually reduce low-end torque.
Will a performance muffler cause drone on the highway?
Some performance mufflers can cause drone at certain RPMs, particularly straight-through designs on vehicles that cruise at steady highway speeds. To minimize drone, choose chambered or turbo-style mufflers, look for 'low drone' product notes, consider adding a resonator, or select a larger muffler case size which helps dampen problematic frequencies.
Do I need a tune after installing a performance muffler?
For most vehicles, installing just a performance muffler does not require a tune. The engine's ECU can adapt to the small change in exhaust flow. However, if you're also changing headers, catalytic converters, or adding forced induction, a tune is recommended to optimize performance and prevent check engine lights.
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