The APR Axleback Exhaust Conversion is a direct bolt-on to an existing APR Catback Exhaust System and converts your valveless system to the APR Valved System with rear mufflers. Features: Direct bolt-on to existing APR Catback Exhaust System Converts valveless system to valved with mufflers T304 stainless-steel construction Argon-back-purged TIG welding throughout Single 3" to quad 2.5" mandrel-bent brushed tubing Ultra-smooth cast 3" to quad 2.5" splitter Brushed-finished straight-through sound-absorption Cast valve housings and brackets for OEM electronic actuators Rugged and precise mounting brackets Low-profile design, suitable for lowered vehicles Larger diameter piping compared to stock In-house design with world-class manufacturing and quality control Easy to install What's Included: APR Catback Axle Back Conversion