h-pipe 4.6/16v 96-97Racing a Mustang? BBK's CNC series off-road race H-pipes could be just what you're looking for to get more muscle for your hyper-pony. These pipes are an easy bolt-on fit and deliver an extra 15 to 20 horsepower. They're made from 16-gauge, aluminized, 2 1/2 in. tubing and are fully computer mandrel-bent, with OEM-quality die-stamped flanges. As the "off-road" in the name indicates, these pipes are for race use only. However, they do have factory-type air-pump and oxygen-sensor fittings.