• The AT4040 is a 4" i.d. inlet, 4" i.d. outlet.
• The AT4040 was designed for high-output engines. It was the original AeroTurbineŽ design.
• The AT4040 was first designed for the racecar circuit. It was proven on both the 600hp Monte Carlos of NASCAR, and the 800hp Sprint car races in Arizona. With feedback from the race circuit being as strong as it was, the AT4040 was then manufactured for introduction to the general public as the AeroTurbineŽ Performance Diesel muffler.
• The only muffler to have the patented airfoil technology, the AT4040 is the hottest new product on the performance Diesel market..
• By design, the AT4040 is versatile enough to be applied to every American made passenger diesel truck, regardless of the make, model, or year.
• The AT4040 has been successfully applied and tested on nearly every year, make and model of Diesel truck on the market. The 3 1/2" exhaust pipe standard on most Diesel trucks can easily be bumped up to 4" or replaced with a full 4" exhaust pipe system.
• The length of the AT4040 muffler allows for dual inline mufflers to be placed on the Diesel vehicles as well. Dual inline AeroTurbineŽs will actually increase airflow and performance, while dropping the EGTs even further than a single, which is directly contradictory to the performance you will see from any other competing muffler product. This is truly a testament to the performance enhancements that the AeroTurbineŽ creates. The AT4040 will give the performance and sound that every performance enthusiast should expect from their vehicle.
• The AT4040 is completely stainless steel inside and out. There is no packing or moisture collecting material in the muffler. The hand-polished stainless steel AT4040 will give you the look and feel that you want and the performance you deserve. The AeroTurbineŽ Lifetime Warranty will guarantee that your investment is still performing as long as you own your vehicle.
• Free UPS shipping to your door!

• The latest breakthrough in Diesel performance exhaust, the 4040 is the most highly rated temperature-reducing muffler on the market today.
• Includes 2-4" Clamps.
• 4" in, 4" out.
• 20" tip to tip.
• Free UPS shipping to your door!

$199.00

• Designed to give your diesel truck an incredible performance increase while maintaining a tone that is similar to stock sound levels.
• The 4040L incorporates a resonator with the technology of the AT4040 into one unit.
• Includes 2-4" Clamps.
• 4" in, 4" out.
• 26" tip to tip.
• Free UPS shipping to your door!

$239.00

• SCT XCAL 3 Programmer, w/Custom Tunes. Adds up to 150 Horse Power, 290 ft-lbs torque!
• Fits all 99-Up 7.3L and 6.0L Powerstroke Turbo Diesel Engines (F-250, F-350).
• MagnaFlow Stainless T-409 Turbo Back System.
• AFE Stage I Cold Air Intake System.
• 3-Gauge Painted Pillar with Boost, Trans, and EGT Autometer Gauges.
  
• Fully Painted, Pre-assembled and wired (Ultralite, Z-Series, Phantom, or Sport-Comp)
• Free Shipping in the Lower 48 States!
• Choose your paint option HERE.

Now $1,299.99