The silencers X-Kone initially for use on some exhausts of Competition line and Competition Full Titanium and now, with a new carbon cap have been developed, and are available for naked middleweight sport bike, in the approved version, with dB -killer removable. The noise is kept under control by absorption, to lighten the internal structure. The interiors are made of stainless steel, the muffler body is nichrom (stainless steel alloy) satin. Depending on the application, the X-Kone terminals can be mounted on the original or the Arrow collectors collectors, with stainless steel fitting and are fixed to the original one of the bike through a brazed joint on the muffler body. The weight of the terminal is about 2.2kg (about 30/40% less than the original silencer) while depending on installation (slip on the original manifolds, or complete kit with Arrow collectors) the performance was significantly better, with reduced dimensions. The assembly does not require changes to maps or the use of additional units. It 'still recommended a monitoring of CO levels.