This 2.25" diameter Axle-Back system delivers the classic S-Type sound with no drone inside the vehicle. It features a 4.25" x 3.5" oval polished T-304 stainless steel tip for a sharp appearance.BORLA Cat-Back* & Axle-Back multi-core technology is designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA Sound of Power is respected by motoring enthusiasts everywhere. Each system is built from premium T-304 stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, BORLA stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. S-Type Axle-Back Exhaust System 2012-2015 Honda Civic 1.8L 4 Cyl.. Automatic/ Manual Transmission Front Wheel Drive 2, 4 Door. Million Mile Warranty 2012-2015 Honda Civic 1.8L 4 Cyl.. Automatic/ Manual Transmission Front Wheel Drive 2, 4 Door.