This MagnaFlow exhaust system is perfect for Ford F - 150 owners who want to enhance their vehicle's performance and sound. Whether you're cruising on the highway or showing off at a car meet, this exhaust will make your truck stand out. The main piping is 2.5 inches in diameter, and it ends with 3.5 - inch polished welded - on single wall angle cut tips. It's designed for 1999 - 2003 Ford F - 150 Lightning and 2004 Ford F - 150 Heritage SVT Lightning models.