Aftermarket stihl ms 390 pop up pistons on ebay

[NewEngland ChainSaw Works]

I just recently found pop up piston on ebay for the 390. I installed them. I broke the pistons in and they make about 165 psi on the gauge. Has anyone had any experience with these pistons and is 165 psi an accurate number for them?


Thank You

 

[cus_deluxe]

the cross performance brand? or another brand?

 

[NewEngland ChainSaw Works]

They are cross yes