Spark Exhaust Technology Ducati Panigale V4 S/R "Double Grid-O" Titanium Full Exhaust System (WSBK Evolution). COMPATIBLE WITH ORIGINAL FAIRINGS AND CLOSED FAIRINGS FOR RACE USE. COMPATIBLE WITH ORIGINAL LICENSE PLATE HOLDER. NOT COMPATIBLE WITH PASSENGER FOOTPEGS. HEATSHIELD INCLUDED WITH THIS SYSTEM. From the experience gained in WSBK, Spark offers a double exhaust underseat left and right side designed to get the maximum performance. Dyno Tested for maximum horsepower increase, 104 db @ 5500rpm. Ducati Panigale V4 exhausts are handcrafted in Italy. Non-Homologated Racing Version for Maximum Performance. For perfect performance, throttle response and durability, ECU remapping is recommended.