Can anyone tell me what pistons these are please

Can anyone tell me what these are for and what rings I need to purchase can't seem to find numbers on Internet

 

It would be easier to tell more about the piston if the picture showed more of it. The shape of the top of the piston is unique for many engines and may provide a hint.

Based only on the steel expansion strut cast into the piston I'd say it's from a Shovelhead. But that's a guess only with limited information to go on.

Paul

 

call S&S,... easiest way seeing that they made them & have an exclent tech department...............

 

Thank you I will call s&s I apologize I thought just those numbers would have been enough

 

maybe someone here will be able to help, but i found it easier &quicker to get information direct from S&S, good people & real helpfull....

 

yeh S&S back their products

 

2500 is an old piston not sure what but i have the old book and let you know

 

 

$38 Canadian for a set of pistons with rings on ebay, they're everywhere for that kind of money.


https://www.ebay.ca/itm/195379155461...Bk9SR4zLnJHxYA

 

They are Cast pistons High compression