Flowmaster 43041 40 Series Muffle

• LEGENDARY SOUND: This is the original Flowmaster muffler that enthusiasts know and love! Famous for its bold, aggressive bark and signature tone. It delivers the unmistakable attitude and street presence that made Flowmaster a legend.
• TWO-CHAMBERED INTERNAL DESIGN: Flowmaster’s classic two-chambered layout delivers that bold, aggressive exhaust sound Flowmaster is known for. Perfect for muscle cars, street rods, trucks, off-road rigs, and custom builds.
• PROVEN PERFORMANCE: Enhances airflow and reduces back pressure to help boost horsepower, torque, and throttle response.
• BUILT TO LAST: Made from 16-gauge aluminized steel and fully MIG-welded to withstand high heat and vibration with no internal packing to blow out or wear down.
• UNIVERSAL FITMENT: Designed for custom and modified exhaust systems, with multiple inlet/outlet sizes and configurations (center/offset, dual) for simplified installation and optimal fit.

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Flowmaster – Classic Performance Sound & Tone

1. Most Aggressive Sound

   Built for Maximum Performance

   Loudest Flowmaster muffler. Compact single-chamber design with an open-pipe tone.

2. Signature Sound

   The Original Flowmaster Sound

   Bold, unmistakable muscle-car tone. Delivers classic Flowmaster performance sound.

3. Deep, Aggressive Tone

   The Deepest Flowmaster Sound

   Compact, powerful design with Delta Flow tech. Delivers rich, aggressive street tone.

4. Straight-Through Design

   Refined Sound, Everyday Drive

   Affordable straight-through muffler with a deep, mellow tone for modern cars and daily drivers.

5. Delta Flow Design

   Performance Sound, Everyday Comfort

   Three-chamber design with Delta Flow tech delivers power, performance, and a mellow tone.

1 Super 10 Series 2 40 Series Original 3 Super 44 Series 4 Flow FX Series 5 50 Series Delta Flow The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Flowmaster Mufflers – Most Popular Mufflers Sound

Find Your Flowmaster Sound

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Customer Reviews	4.8 out of 5 stars883	4.8 out of 5 stars509	4.6 out of 5 stars356	4.7 out of 5 stars876	4.7 out of 5 stars706
Price	$89.96$89.96	$89.96$89.96	—	$134.95$134.95	—
Sound Level	Very Aggressive	Aggressive	Aggressive	Aggressive	Moderate
Interior Resonance	Noticeable	Noticeable	Moderate	Moderate	Minimal
Tone	Race tone	Classic tone	Deep tone	Refined tone	Refined tone
Best For	Track builds	Muscle cars	Street builds	Street trucks	Daily drive
Key Features	Compact design	Original design	Dual chamber	Low resonance	Modern design