420cc ungoverned question

[OPmini]

Hi Im looking to run a stock predator 420cc ungoverned but I dont know if I will have to get a billet piston rod like on the 212 thanks!

 

[65ShelbyClone]

You really should.

 

[landuse]

Have you upgraded the valve springs? If you have, then i would say yes. If not, then the RPM's will be limited by valve float, and you can get away with not having a billet rod. That is the general consensus