The 40 series of the Flowmaster product lines consists of the original 40, the super 40, the 40 delta flow, and the delta force. The Flowmaster 40 series mufflers are perhaps the most aggressive-sounding street and strip mufflers among the Flowmaster products. They are designed for use on both street and strip vehicles. The angled baffles built into the muffler case are employed to cancel out sound waves produced in the exhaust.

By doing so, fuel economy and horsepower are heightened and the performance of your vehicle is improved. The 40 Series mufflers produce the original Flowmaster sound both outside and inside your auto. If you are craving for attention, the standard series is the best for you. The standard 40 series products have an aggressive rumble and will generally resonate inside your vehicle around 1800-2000 rpm and again at 2400-2600 rpm.

The Super 40 Series is Flowmaster’s latest development, utilizing the Gen II Delta Flow technology. This will give you the best of both worlds in terms of sound and performance. The Flowmaster 40 Series Delta Flow mufflers, on the other hand, produce a loud and aggressive noise outside your vehicle while maintaining a quieter sound inside. They employ three internal baffles which are precisely placed in the case and welded to exact specifications. Along with the precision welding of these mufflers, the Delta Flow out-scavenges and provides superior exterior sound reductions when compared to the regular 40 series mufflers. Added to these, you can expect the Delta Flow to give you improved torque, horsepower, and the famous Flowmaster sound. Looking for an advanced performance from your auto and an exhaust tone that says it all? Upgrade to the Flowmaster 4o Series now and get the distinction that you have always craved for.