This MagnaFlow exhaust system is perfect for Mazda Miata enthusiasts from 1990 to 1997 who want to enhance their car's performance and sound. Whether you're cruising on the highway or at a stoplight, it'll make your Miata stand out. The main piping is 2.25 inches in diameter, and the tips are 4 inches. It's easy to install by yourself and comes with great warranties, making it a reliable choice for your car.