HKS Hi-Power Catback Exhaust for 00-03 Honda S2000. Inspired by GT and Sprint racing in Japan, the HKS Hi-Power catback exhaust system is known for its incredible tone and flow. Featuring full 65mm piping and dual Mufflers, there is no doubt that the HKS Hi-Power catback exhaust system for the 00-05 Honda S2000 will turn heads. If you have ever heard the HKS Hi-Power in person, you know its gonna give you the deep throaty Japanese race-inspired sound you are looking for. The HKS Hi-Power catback exhaust for the S2000 features a stainless steel muffler and tip with coated mild steel piping. Kit includes all gaskets necessary for proper installation and perfect fitment.