Flowmaster 40 Series muffler side view shows aggressive tone and rugged construction
Flowmaster 40 Series muffler inlet 2.50-inch offset for adaptable fitment
Flowmaster 40 Series muffler outlet 2.50-inch center for universal center-outlet design
Flowmaster 40 Series muffler body made from 16-gauge aluminized steel
Flowmaster 40 Series muffler welded construction for durability
Flowmaster 40 Series muffler delivers legendary, aggressive sound
Flowmaster 40 Series universal fitment supports easy installation
Flowmaster 40 Series ideal for muscle cars and street rods
Flowmaster 40 Series muffler suits trucks, SUVs, and strip builds
Flowmaster 40 Series muffler side view shows aggressive tone and rugged construction
Flowmaster 40 Series muffler inlet 2.50-inch offset for adaptable fitment
Flowmaster 40 Series muffler outlet 2.50-inch center for universal center-outlet design
Flowmaster 40 Series muffler body made from 16-gauge aluminized steel
Flowmaster 40 Series muffler welded construction for durability
Flowmaster 40 Series muffler delivers legendary, aggressive sound
Flowmaster 40 Series universal fitment supports easy installation
Flowmaster 40 Series ideal for muscle cars and street rods
Flowmaster 40 Series muffler suits trucks, SUVs, and strip builds

Flowmaster 40 Series Original Chambered Muffler – 2.50 in Inlet / 2.50 in Center Out – Aggressive Sound

Meet the Flowmaster 40 Series Original Chambered Muffler, a cornerstone of the Flowmaster heritage renowned for its...
Vendor: Flowmaster
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£144.80
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Flowmaster 40 Series muffler side view shows aggressive tone and rugged construction

Flowmaster 40 Series Original Chambered Muffler – 2.50 in Inlet / 2.50 in Center Out – Aggressive Sound

£144.80
Flowmaster 40 Series muffler side view shows aggressive tone and rugged construction
Flowmaster 40 Series muffler inlet 2.50-inch offset for adaptable fitment
Flowmaster 40 Series muffler outlet 2.50-inch center for universal center-outlet design
Flowmaster 40 Series muffler body made from 16-gauge aluminized steel
Flowmaster 40 Series muffler welded construction for durability
Flowmaster 40 Series muffler delivers legendary, aggressive sound
Flowmaster 40 Series universal fitment supports easy installation
Flowmaster 40 Series ideal for muscle cars and street rods
Flowmaster 40 Series muffler suits trucks, SUVs, and strip builds

Flowmaster 40 Series Original Chambered Muffler – 2.50 in Inlet / 2.50 in Center Out – Aggressive Sound

£144.80
Description
Description
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Meet the Flowmaster 40 Series Original Chambered Muffler, a cornerstone of the Flowmaster heritage renowned for its bold bark and unmistakable street presence. Built to endure heat and vibration, this 16-gauge aluminized steel muffler arrives fully MIG-welded with no internal packing to wear out. The design features a 2.50 in offset inlet paired with a 2.50 in center-outlet, making it a flexible addition to many custom exhaust layouts while preserving strong exhaust flow.

Legendary sound and two-chamber design

  • Bold, aggressive bark that defines an iconic Flowmaster character
  • Two-chamber internal layout shapes a deep, confident exhaust tone
  • Signature cadence that helps your vehicle stand out on both street and strip

Performance and durability

  • Enhanced airflow and reduced back pressure to support throttle response and engine feel
  • 16-gauge aluminized steel with MIG welds for heat resistance and durability
  • No internal packing to wear down, helping sustain performance over time

Flexible, universal fitment

  • Designed for custom and modified exhaust systems with multiple inlet/outlet options
  • Center and offset configurations simplify installation and help you achieve a balanced fit

In real-world use, the Flowmaster 40 Series can complement a range of builds—from bold street machines to rugged trucks—providing a commanding presence without sacrificing driveability. If you want a recognizable exhaust personality, this muffler offers a pathway to that character with a reliable, durable build. Benefits are possibilities you may experience with proper setup and tuning.

FAQ

Q: What type of sound does the Flowmaster 40 Series Original Chambered Muffler produce?

A: It delivers a bold, aggressive tone with a signature Flowmaster bark, suitable for muscle cars, street rods, and trucks.

Q: Is this muffler compatible with various exhaust setups?

A: Yes. It features a universal fitment with multiple inlet/outlet options for center or offset configurations, supporting customized installations.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

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When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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