Use this exhaust system when you want to enhance your driving experience, whether it's daily commuting or weekend adventures. It's perfect for Toyota Sequoia owners who love a powerful engine sound and improved performance. The main piping is 3 inches in diameter, and it has 2 straight - through mufflers. The exhaust exits on the passenger side rear with 3.5 x 5.5 inches polished welded - on double wall straight cut rolled edge tips.