Borla presents their Axle-Back system for the fourth generation Mazda 3 Hatchback. The exhaust system replaces the stock rear muffler and is a direct bolt-on part for ease of installation. Specifically tuned for the 2.5L Skyactiv engine, our S-Type Axle-Back delivers a sportier sound and a more exciting driving experience without any drone. It features 4″ Black Chrome on T-304 stainless steel exhaust tips that properly fill out the rear bumper cutouts. Using Borla Stainless Steel Polish p# 21461 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. Bright Chrome tips are also available. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. As you can expect from Borla, the exhaust is constructed using T-304 stainless steel and comes with a Million-Mile Warranty. Give your Mazda 3 the sound it deserves, bolt on a Borla., System Features:, Axle-Back Exhaust System, S-Type Sound Level, T-304 Stainless Steel Construction, 2.5″ to dual 2″ Pipe Diameter, 4″ Black Chrome On T-304 Stainless Steel Tips, No-Drone, Million Mile Warranty