Armor Lite™ Aluminized Steel Axle-Back Exhaust System with Split Rear Exit by MBRP®. Exhaust System Type: Axle-Back. Exhaust Tubing Material: Aluminized Steel. Main Tubing Diameter: 2.5". Exhaust System Sound: Moderate. The MBRP Armor Lite™ allows you to unlock the true potential of your vehicle at a very reasonable cost. The Armor Lite™ Series exhaust systems are a value option with the same fitment, performance and sound as the premium products from MBRP. Heavy-gauge Aluminized Steel tubing helps to resist dings and dents caused by debris under your vehicle. This material can be a great choice for you if you live in a dry climate that doesn’t see much precipitation, or if you’re looking for great sound on a budget. All of the tubing is mandrel bent for maximum exhaust flow. Mandrel bending ensures no rippling in the bends.