Street muffler by Pit Crew Racing for NB (1998-2005) Mazda Miata/MX-5. A very simple design with priority to engine performance. This muffler was made in a straight pipe style in order to maximize engine breathing for more power. During testing, improvements in both torque and horsepower were seen during the high rev ranges along with a deeper and louder exhaust note compared to stock. Built specifically for the NB (1998-2005) Miata, installation is a very simple bolt on procedure. It has a nice and unique angled tip and will improve torque and power at high revolution. It’s available in straight pipe and resonated version. Pit Crew Racing Street Muffler should be ordered at REV9 Autosport https://us.rev9autosport.com/pit-crew-racing-street-muffler.html as they provide the best service and speed we've seen so far!