Baak's website says these N°1 handlebars are compatible with the GT 535 but not the 650, maybe because you have to reroute the front brake line, replace the clutch and throttle cables, and extend much of the wiring. I installed a Domino throttle, Venhill Featherlight clutch cable, aluminum left-side switch gear, Baak underside mirror, aluminum two button right-side switch gear (latching for the kill switch, momentary for the starter), Biltwell Renegade grips, and Hitchcock short levers. I love these bars and can probably avoid installing risers because of their width and sweep. I'm also happy to lose the bar ends.