Is this Billet or Forged?

I bought the oem because wiseco discontinued them for the 510. The price costed me 400$ for that piston assembly and it's too shiny to be cast.

FORGED....BILLET WOULD BE WAAAAY PRICEY

Machined forging, flip it over and that's the way to really tell between cast and forged.
Not a machined billet though.

Ah gotcha, thank you!

For installment, can I throw in slight film of 2 stroke premix to lube the rings and pin or would that be too much and foul up the plug?

lube it but not to much dont want to glaze that freshly honed cylinder

thats how you assemble a top end. i always use a light film over piston and cylinder surface on a new topend job.

wait a second, this is a fourstroke! no need for 2 stroke oil..just use a light film of whatever oil the engine is going to run.

Lots of oil. You can't use too much.

Will do, thinking dry on dry makes me cringe haha.

most cam mfgs have a specific lube for cams, might want to invest in some if your going to b doing the valve train too