Predator 420 non hemi piston

I have a predator 420 non hemi that needs rings and piston, I’m a little confused as if it’s any difference in the piston between the hemi and non hemi? Because some sites have them listed separate? Can I just use the 90mm flat top for the non hemi? Or does it matter? Thanks!

You can run a Hemi piston in a Non-Hemi but I dont suggest running the Hemi flat top piston. It has a problem with skirt failure over time and will destroy the engine. Non-Hemi piston has longer and stronger skirts.


Got it! Thanks so much!