2017 KTM RC390 Sound - Stock vs. Yoshimura R-77 3/4 Race Series system
https://www.yoshimura-rd.com/collections/all/KTM-RC390-2018 Take a listen to the R-77 3/4 Race Series system. The fitment on this system works on the 2017 390 Duke as well. RACE SERIES FOR CLOSED COURSE COMPETITION ONLY; NOT INTENDED FOR STREET USE.
https://www.yoshimura-rd.com/collections/all/KTM-RC390-2018 Take a listen to the R-77 3/4 Race Series system. The fitment on this system works on the 2017 390 Duke as well. RACE SERIES FOR CLOSED COURSE COMPETITION ONLY; NOT INTENDED FOR STREET USE.