Arrow X-Kone Silencer KTM 390 Duke
X-Kone silencers were first designed to be used in Arrow Competition and Competition Full Titanium systems. The results and appreciation these silencers received suggested that Arrow create a separate line of standard systems, using a new carbon endcap, designed to fit naked and sportbikes. The internal structure of the silencer is stainless steel, silencer body is in Nichrom (an alloy with stainless steel) with satin finish. X-Kone silencers can be fitted on the original silencers (as a slip on – with midpipe) or on the Arrow collectors as part of a full system and they are secured to the frame by means of a mount welded on the upper side of the body. Noise damping is achieved by absorption: this enables to reduce the weight and the dimensions of the silencer: the weight of the silencer is about 2.2kg, typically 30/40% less than the OE. Even after installing the slip on version it helps to increase performance, logically using the X-Kone silencer with Arrow collectors gives the best performance gain. Fitting an X-Kone is easy and fast and these systems require no changes to the original settings of the ECU or to add a separate ECU module. Arrow suggests to check CO levels once the exhaust is installed. X-Kone silencers are street legal for noise with a removable baffle.