Jetprime - Precision Control, Supreme Quality Jetprime Velocity Stacks for Ducati 848 EVO 1098 / S Designed for standard and modifed engines, the shape of these special velocity stacks provides an improved venturi effect compared with the standard velocity stacks and is perfectly connected with the throttle body. The injector support is very thin and aerodynamic, so as to disturb the incoming air flow as little as possible. They are made of ergal 7075-T6 with the most modern CNC machines and are designed and manufactured entirely by Jetprime. They are mounted without any modification inside the air box using the standard petrol tube and injectors. Installation is simple, but fitting by a qualified technician is recommended. Full potential is achieved when they are used together with a dedicated mapping which has been professionally prepared by an expert. Part No. JPRATR020 Model compatibility Ducati 848 EVO 2011 - 2013 Ducati 1098 / S 2007 - 2008