The Spark 2008-2014 Aprilia Dorsoduro 750 Double Titanium "Rectangular" Semi-Full Exhaust System with Catalyst Eliminating Stainless Manifold Collector is designed for Maximum Performance, Looks, Weight Savings and a Rich Deep Sound only possible through the Passionate Way of Italian Work. Handcrafted in Italy, Dyno Tested for maximum horsepower increase over stock. Includes removable sound reducing DB Killer.