K&L valve shims average 47.0 compared to 46.0 maximum on the Appararent Rockwell Hardness "C" Scale. Includes 2 pieces each of the following sizes Kit includes plastic storage organizer box. YAMAHA XVZ12/ Venture 83-93.
These are K&L brand shims and are of great quality but the spacing of the shim's is .1 mm or .004 apart. The tolerance of the 1980 CB750C is only .003 so it is hard or impossible to adjust the clearance of the tappets. I ended up buying a Master kit where the shim spacing is .05 mm or .002".
Other wise they would get a 4 star rating.