Use this MagnaFlow exhaust system when you're looking to enhance your daily driving experience or show off at car meets. It's perfect for Toyota Tundra owners from 2014 - 2021 who want better performance and a cool sound. The main piping is 2.5 inches in diameter, and the tips are 3.5 inches. It replaces the stock exhaust from near the catalytic converter, and its direct - fit design makes installation a breeze.