Yoshimura 1090/1190/1290 Adventure RS-4 Stainless Slip-On Exhaust, W/ Stainless MufflerYoshimura 1090 1190 1290 Adventure RS 4 Stainless Slip On Exhaust, W Stainless Muffler In the world of Adventure bikes, KTM big bore bikes are held in very high regard. KTM 1290, 1190 and now with addition of the new 1090, the orange brand is aiming high at filling every desire of the adventure rider. For those that want to compliment these three KTM machines, Yoshimura has developed an RS 4 slip on that delivers in every area that an adventure rider