2010 KTM 690 Duke R Wallpaper 2010 KTM 690 Duke R photos 2010 KTM 690 Duke R black editionModification KTM 690 Duke R release with high performance.The KTM LC4 model palette is legendary. What was set in motion for 20 years ago in Mattighofen, Austria with the development of a potent and sporty single cylinder four-stroke motor has now resulted in the company having a massive fan base. something