Flowmaster’s Delta Flow 40 Series two chamber design incorporates Flowmaster’s Delta Flow technology. The “Delta” deflectors generate increased scavenging for better performance and reduced interior sound. Perfect for vehicles where an aggressive exterior tone is desired with reduced interior tone.

The muffler that started it all, the original 40 Series Muffler is an aggressive sounding street/strip muffler that delivers a powerful “Flowmaster Sound” you’ve heard so much about it. If you really want to hear your exhaust system and that great muscle car tone – from both inside and out of the vehicle – the 40 Series is for you.

Our largest and quietest muffler, the 50 Series Big Block Mufflers is made for tow vehicles, full-size trucks, large SUV’s and RV’s/Motor homes. More than just compatible with big cubic inch engine application, the 50 Series Big Block incorporates a very large Resonance Tuning Chamber to almost completely reduce interior sound in large cab vehicle and enough case volume to handle engines under heavy loads – perfect for tow vehicles.

Flowmaster 50 SERIES DELTA FLOW mufflers are designed to reduce interior sound and resonance, the 50 Series Delta Flow’s moderate exterior tone level is the result our advanced technology. This compact exterior case size muffler was especially designed for passenger cars rather than trucks or SUV’s.

The 50 Series HD Heavy Duty Muffler is appropriately named, a tough customer just like the trucks it was designed for. With 4.00-inch internal components and large case size, these mufflers help to significantly increase mileage, torque, and horsepower while greatly improving towing power acceleration. The 50 Series Heavy Duty is great for all gas and diesel applications, and late-model trucks used in the most extreme working conditions.

Flowmaster 60 Series Muffler feature Delta Flow Technology to increase horsepower and torque in four and six cylinder vehicles. These large case, short design mufflers have shown significant improvements in mileage, helping to save fuel on many commuter vehicles, the mellow tone making for a pleasant and quiet driving experience. Constructed of 16-gauge aluminized steel and fully MIG-welded for maximum durability.

The 70 Series Big Block Muffler uses a longer case for increased volume and added sound reduction that will still fit many applications where the wider 50 Series Big Block muffler won’t fit. The 70 Series Big Block utilizes Flowmaster’s Delta Flow Technology for maximum efficiency and minimum interior resonance street cars, most trucks, SUV’s, RVs and tow vehicles that require quiet operation with improved sound.

True Dual exhaust performance where only a single exhaust system will fit such as is commonly found in classic Camaros/Firebirds, the 80 Series Cross-Flow Muffler fits transversely behind the rear axle and in front of the fuel tank, the OE placement. With single or dual inlets, the 80 Series gives excellent ground clearance, aggressive tone and dual outlets to fit muscle cars requiring this specialized fitment. Constructed of 16-gauge aluminized steel and fully MIG-welded for maximum durability.

Looking for the most aggressive sounding Flowmaster muffler available? Flowmaster’s new Super 10™ series mufflers are so aggressive that we can’t even recommend them for use on street driven vehicles. Best suited to racing applications, they utilize the same Delta Flow performance technology used in our highly popular Super 40 and Super 44 series mufflers.

Developed from our Top Ten race muffler lineup for use on the street and strip. Utilizing Delta Flow Technology, this muffler gives the best performance to higher horsepower vehicles. The Super 40 features a black, oversize case, which keeps the resonance down while the deep outside tone says it’s a Flowmaster!

The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing 2-chamber street muffler we’ve ever built! Available in either 409SS Stainless Steel with a lifetime warranty or 16-gauge aluminized steel with a 3-year warranty, these mufflers feature our advanced Delta Flow Technology design and are fully MIG-welded for maximum durability.

The Super 50 (formerly called 50 SUV) incorporates an increased case size with the innovative technology found in the 50 Series Delta Flow mufflers. The Super 50 Series’ large tuning chamber allows for optimum exhaust flow, increased mileage and reduced interior resonance. This muffler is especially suited for trucks and SUVs as well as full-sized, high performance street cars looking to reduce interior resonance and tone levels for everyday driving.

The Aero Chamber Muffler produces a deep throaty powerful sound that will not change with time. The Hooker Aero Chamber uses a unique step principal, similar to that which is currently popular in racing header design. The aerodynamically designed chambers flow 23% better and produce more horsepower and torque than the most popular high performance brand

Flowtech Afterburner Series Mufflers are your very best bet for optimum performance and awesome sound. All Afterburners are made with an aluminized case for miles and miles of rust and corrosion protection. Their fully-welded construction offers stronger seams to prevent blow out under extreme conditions. Huge flow
tubes provide blistering horsepower, while the sound tuned chambers provide unbelievable sound and minimize annoying resonance.

FlowMonster™ mufflers are constructed of 16-gauge aluminized steel and are 100% MIG welded for maximum strength and durability. The chambered design cancels out unwanted frequencies with no packing producing an aggressive exhaust note that will not change with time. FlowMonster™ mufflers are coated with high heat resistant silver paint for an aggressive look under your car.