KX Guru Racing

KX Guru Racing KX500 Shift shaft conversion

Well guys, Shift shafts are available, then they are discontinued, then they are available, then discontinued
One thing is for sure, it's just a matter of time before you won't be able to get them.
So, what can we do?
Of course there is always eBay but I'd like to do something a little better.
First, lets get some rough dimensions of the shaft...
The first dimension is the over all length of the shaft... 147.13mm
Remember, all dimensions are approximate at this point.




From the splined end of the shaft to the face of the plate.125.54mm




From the right side of the shaft to the inside of the plate is 21.64mm

Next up, I need a KX450F shaft.
I have one on order but it may be a week or so before it gets here.
More later...

Ok, I ordered a used KX450F 2006 shift shaft and it is about .030" longer than then KX500 shaft. Perfect

So, 06 will work but interchange info shows the following:
06 - 13161-0031 Will work
07-12 - 13161-0045
13-15 - 13161-008
16-19 - 13161-0583

KX250F shift shafts are too short.
I will also be comparing other shift shafts from other manufactures

I will be testing more as time goes on but I have only looked at the 06 so far.

Mocking up a fixture for correct alignment and timing for the plate to the splines.

I did a little work on the weld fixture today..
And just about done..