Akrapovic Slip-On Line Silencer KTM 390 Duke, RC390 2017 More sound, more style and less weight with long service life: Carbon outer sleeve Carbon end cap Enhanced performance Sporty Sound No new engine mapping necessary Plug & Play assembly Perfect Akrapovic workmanship Note: The following parts cannot be used in combination with this exhaust system: 61029955244 / 90229955044 Bobbins For Rear Wheel Stand 90110945000 Rear Crash Pads