I.D. 22mm 35mm O.D. Get 1-1mm and 2-0.5 mm. I got mine at the local John Deer dealership along with a big smile from the parts girl for free!
chech out this link www.nyrocatv.com/forum.cgi?viewcat=4&viewtopic=25628
I used one from a altenator shop was only 1.6mm thick but cost about $0.10. when you install make shure you get the roller plate (the plate with the splines on it) on the shaft verrry good. first time i installed the shim i started the quad up and zzzzzzzzzzzzzzing
Just installed the mod on my demo( 07 KQ 700 w/27 swamp foxes) and now it picks up the front tires easily.
ha ha have seen the damage a couple times now. That plate only costs 40 but is an inconveniance/embarrassing situation. Haven't seen any c.clutch drum spline damage, alot harder steel.
Needless to say it is a good mod to do but like Kingkris06 said make sure you get back together right or it will hurt your king. later
got the shims. Putting them in I found that the full 2mm brought the belt to high in the secondary so I went down to 1.5mm. Looks good now can't wait to see if it makes a difference.