Arrow Ducati Hypermotard Thunder slip-on exhaust system. Available with either aluminum, carbon fiber or titanium silencers. The carbon fiber and titanium silencers have the option of stainless steel or carbon fiber end caps. The aluminum and titanium silencers have removable db killers while the carbon fiber silencers only come with no db killers.  These slip-ons include the mid-pipe that is located between the catalytic converter and the OEM silencer. This will work with either your stock collectors and catalytic converter or the Arrow collector pipes #71375MI to create a full system. This mid-pipe removes the ex-valve.  There is no performance without quality. This is the philosophy that has allowed Arrow to achieve the highest level of reliability, pursued with the help of skilled workers, hand crafted workmanship, the finest materials and no compromises.