Yoshimura introduces an RS-9 Dual muffler Slip-On race system for the highly sought after 2015 KTM RC390 This system increases power over the entire spectrum while also increasing torque of the 373cc single cylinder engine The sound this system produces with the beautiful Yoshimura RS-9 Dual mufflers is what the KTM RC390 deserves This system removes the bulky box-muffler and rear pegs. Dual under-tail mounted racing system Carbon fiber end-cap Polished stainless steel tail-pipe Includes body colored cover plate for stock exhaust location