Ok I just bought a 86 Suzuki lt230s I believe i really don稚 know what it is all I know is it semi auto which I知 saying that because you have to shift but with no clutch. Now I知 having piston ring issues I tore the head off of the motor and got to the piston then I noticed it has 0.50mm stamped on top of it and underneath it says 4382p2 now I知 not to sure what it means so I basically have looked up the piston and rings the quad as from the factory and it says 66.0 mm piston and rings. So I guess I知 asking what the stamping on the piston means and what piston should I be looking for to get. Please if someone could help id appreciate it.