Join Date: Jul 2007
Location: Ljubljana, Slovenia, Europe
Yes, they are standard for Honda, Kawa and others. MV specifies the allowed thickness to be between 1.60 and 2.60 mm.
If you don't find the exact one, you can also brush them against sandpaper layed on a glass to get a few 0.01s off. It worked couple of times for me.
Or if you want to have a blueprinted engine, for instance and you can all put them on same clearance.
One race team that will run F3 this year just rebuilt the engine to the tolerances and gained 3-4 HP.