Back in 88, I had a 88 500 and had heard about a possible WR trans that was being developed by a California dealership that was heavy into desert racing. The dealership was Kawasaki of Riverside. I called them at the time and spoke to someone there that said they developed a kit and were testing it. I dont think anything came of it. Does anyone know if that dealer still exists? KOR was on their decals. I was at that dealer about a year prior and they were well set up for offroad. On early KX250's, 85-86 maybe other years also, you could put the entire WR trans from the 250 Tecate 3 wheeler into them. Also the ignition, stator etc. for the heavy flywheel and lighting capabilities. I had the WR 4th and 5th gears in my 86 KX250. It would top out in the mid 80s.