FMF Racing Powerbomb Stainless Header for Suzuki DRZ400 00-07/DRZ400S 00-21/DRZ400SM 05-21/Kawasaki KLX400R/KLX400SR 03-04FMF PowerBomb Header Kawasaki KLX400R KLX400SR Suzuki DR Z400 S SM If you spend most of your time riding in the mid to upper RPM range the FMF PowerBomb is the header for you. The PowerBomb incorporates a patented chamber at a precise location in the initial stage of the header. This chamber allows exhaust gases to expand and then contract, resulting in nearly a 10% flow increase. Not only does the PowerBomb offer more usable mid to top end power, it