FMF Racing KTM 450/500EXC-F 17-19/HQV FE450/501 17-19 SS Megabomb Header/Mid PipeThe ultimate power boost, the MegaBomb Headers improve performance along the bottom and mid range powerband. Patented FMF technology combines the benefits of a longer header, with top end peformance of a shorter header. Effectively reduces sound output by as much as 1. 5 dB FMF Racing KTM 450 500EXC F 17 19 HQV FE450 501 17 19 SS Megabomb Header Mid Pipe The ultimate power boost, the MegaBomb Headers improve performance along the bottom and mid range