can anyone tell me if these are XB 9 or XB 12 pistons??

[pur pony]

can anyone tell me from this pic if these are XB 9 or XB 12 pistons? Someone told me they where 12 pistons because they are not domed?

 

[GAXB9R]

Casting numbers on there anywhere?

 

[buellxb9rs]

I was looking at that on eBay. Compared to my xb9 pistons, they don't look right. Xb9 pistons have a dome on the top and not a circle. Xb12 pistons are flat as well as the blast pistons.