The ultimate power booster Improved bottom to mid-range power Produce the low end of a longer header and the top end of a short header Less susceptible to damage than a long header Effectively reduces sound output by as much as 1.5 dB Run well with sound-restricting mufflers Available in stainless steel or FMF's exclusive Ti-Metal construction. HEADER S/S MBMB KTM/HSQV