http://www.ebay.com/itm/251707666830It says KX250 78-79, but I've seen this same lever sold in other ebay ads and they say it will fit 86 KX 250.
The seller was kind enough to measure, and it seems to be the same length, and the spline shaft is the same dia., 16mm. Although, they were not able to count the splines on their lever since it has a pinch bolt. I counted 30 splines on my shaft.
I believe the 94-01 lever will fit my 87 KX250, but seems expensive at $100, so I figured I'd this one.
dinky,