Spark Exhaust Technology Ducati Hypermotard 950/SP "Double Grid-O" Semi-Full Exhaust System. The extreme look strikes at first sight by displaying a high-mounting double exhaust with right side and left side Grid-O silencers. The Grid-O full titanium silencers are the result of Spark R&D’s endless and meticulous work that has been directly carried out on WSBK and Moto2 World Championship race tracks. Special materials such as titanium, state-of-the-art technologies such as 3D laser cutting for production and TIG welding make Grid-O exhaust a veritable concentrate of technology in just 600 grams for each silencer. Sound is deep and aggressive thanks to the removable dB killer but compliant. The Grid-O slip-on connects to the catalyzed original collector by stainless steel pipes. Diameters have been studied and tested so as to increase performance of about 2 hp compared to the standard exhaust. Aggressive design, excellent performance, weight saving (-58% compared to the original). Handcrafted in Italy, Approximately 2kg, Dyno Tested for maximum horsepower increase over stock, 99 db.