In stock, ready to ship. Due to popular demand, HKS has released a single muffler version of the Hi-Power cat-back exhaust for the Honda S2000. Best of all, the piping diameter is 75mm, off the shelf! This exhaust will work great for forced induction or normally aspirated motors. Another addition HKS has made to this version is an adjustable 97mm titanium tip with a burnt blue finish. Note: Exhaust tested at 96DB on factory AP2.