10 Series Delta Force® Race - Single Chamber

The 10 series race mufflers all utilize Flowmaster's patented "Delta Flow" technology and have a noticeable dB reduction over open headers. Recommended for racing applications where a race muffler is required, but without a set decibel limit to be met. Please call the Flowmaster tech-line with your specific dB requirements and applications.

Original 40 Series - Two Chamber Mufflers

This is the most “aggressive” sounding street/strip muffler that Flowmaster offers. If you're looking for attention, this one will get you noticed. The standard 40 series has an “aggressive rumble" and will generally resonate inside the vehicle around 1800-2000 rpm’s, and again at 2400-2600 rpm’s.   Constructed of 16 gauge aluminized steel and fully mig-welded for maximum durability.

40 Series Delta Flow -Two Chamber Mufflers

This two chamber design incorporates Flowmasters patented "Delta Flow" technology. The "Delta" deflectors result in increased scavenging for better performance and reduced interior resonance over the standard 40 series with a nice growl outside the vehicle. Sounds great on late model performance cars with catalytic converters. Constructed of 16 gauge aluminized steel and fully mig-welded for maximum durability.

Super 40 - Two Chamber High Performance Mufflers

50 Series SUV Performance - Three Chamber Mufflers

The SUV/Performance muffler is a larger version of Flowmasters 50 Series Delta Flow muffler and is specially designed for trucks, light SUVs and high horsepower vehicles. The larger H-chamber reduces interior resonance to a minimum. Constructed of 16 gauge aluminized steel and fully mig-welded for maximum durability.

50 Series Big Block - Three Chamber Mufflers

The 50 series "Big Block" muffler is our largest muffler for tow vehicles, trucks, large Sport utilities and Recreational Vehicles. This muffler is made for more than just big cubic inch engine applications. It has a very large H-Chamber to reduce interior resonance in large cab areas of vehicles and enough case volume to handle engines under heavy loads. Constructed of 16 gauge aluminized steel and fully mig-welded for maximum durability.

70 Series Big Block II - Three Chamber Mufflers

The 70 Series "Big Block II" uses a large case for increased volume and added sound reduction that will still fit many applications that our 50 series "Big Block/HD" muffler won't fit. It utilizes Flowmaster's patented "Delta Flow" technology for maximum efficiency and reduction of interior resonance. Use on high performance street cars, trucks, SUV's, RVs and tow vehicles. Constructed of 16 gauge aluminized steel and fully mig-welded for maximum durability.

80 Series Cross Flow - Two Chamber Mufflers

The 80 Series is designed for applications where the muffler must be mounted transversely (cross-flow) behind the rearend. It provides an aggressive muscle car sound both inside and outside the vehicle. A replacement for early and late model Camaros & Firebirds. Constructed of 16 gauge aluminized steel and fully mig-welded for maximum durability.

Hushpower II

The Hushpower II incorporates "Jet Laminar technology" together with Flowmasters sound chamber designs to give a sweet rumble reminiscent to that mellow 1950's tone in a very compact and presentable case. Constructed in T304 Stainless Steel case that can be highly polished for that show look, or available in a high temp. grey painted T409 Stainless Steel case, both with full stainless steel internals to last for years and years.