57.mm end gaps?

[Stangeland]

Can someone tell me the stock gaps for a 57mm piston in mm. I heard 4mm. Not for sure. 1st n 2nd compression rings measurements. In not good with math lol so a direct answers in mm would be ideal. It's for a 150gy6 engine

 

[mckutzy]

Quick search... came up with this...

http://totalruckus.com/phpBB3/viewtopic.php?f=116&t=50582

 

[Stangeland]

I was told by scrappydog scooters that stock sets come pre gapped. Hope they are right