hey i was wondering wat kind or size shim do buy or do they come in a set

 

I don't remember the shim diameter,
you can get a shim kit but they are expensive,
shims are $5 each,
best to measure gap, then remove shim and measure thickness, then do the math to figure out the needed shim thickness, and get them from dealer or order from Ron Wood Racing

 

I think its 29mm.

 

Get the shims at a BMW or yamaha dealer also.