Heartthrob Exhaust's new 4-inch cat-back exhaust system is made for late-model gas-powered pickup trucks. The systems feature 16-gauge, 4-inch aluminized tubing that is CNC mandrel bent, plus Heartthrob's new HVS welded performance muffler. The system is dyno tested to gain 7.5 rear-wheel horsepower on the 2009-2011 Chevy/GMC 6.2-liter, 13 rear-wheel horses on the 2007-2011 Chevy/GMC 2500/3500 with the 6.0-liter, and 38 rear-wheel horses on the 2011 Ford F-150 EcoBoost 3.5-liter. The pipes enhance power without adding a lot of unwanted drone. MSRP is $467.