FMF Racing PowerBomb header pipes make your race explosive! These redesigned header pipes are 4-stroke headers that locate FMF's patented PowerBomb module at a precise key location in the system. Increased performance and flow are achieved through the expansion and contraction of exhaust sonics through the system by placing the "bombs" just so they offer an increase in flow of about 10 percent. Plus, PowerBomb header pipes act kind of like a pre-muffler, helping to lower your bike's sound output.Add some power to your race bike with one of these PowerBombs from FMF Racing. This Item Fits the Following Applications. The item "FMF Powerbomb Exhaust Head Pipe Header Honda Crf450r Crf 450 2002-2003" is in sale since Wednesday, August 10, 2016. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Exhausts & Exhaust Systems\Other Exhaust Parts". The seller is "bidby" and is located in Oklahoma City, Oklahoma. This item can be shipped to United States, all countries in Europe, Canada, Australia, Mexico, Japan, South Korea, Indonesia, Taiwan, South africa, Thailand, Hong Kong, New Zealand, Philippines, Singapore, Saudi arabia, United arab emirates, Qatar, Kuwait, Malaysia, Brazil, Colombia.