Twisted Throttle has the SW-Motech bar riser for K bikes on sale. Got a set for about $65.00 (bar=22mm, H=30mm, Back=21mm), and they shipped super fast.
The kit is very nice with plastic plugs to detail fill the hex head bolts. Parts were individually packaged to avoid scratching...which happened on installation anyway.
The stock K75S front brake hose is long enough and just needed to be loosened and pivoted a bit. All other lines had ample length.
Ended up fabing up asymmetrical brackets to avoid any rub on the brake hose, keeping in mind full-lock clearance for the tank cover if used.
Mirrors adjust fine, and the slightly more upright posture is much more comfortable, especially on the wrists/forearms. GPS moves up a bit and blocks the low-gas and "choke" lights a little, although they can still be noted when lit.
Cheers!