Everything you need to blow away the competition in 125cc class. This Kitaco Power Pak kit includes stock bore, high compression, DLC coated 12.2:1 piston kit with rings and gaskets, iMap fuel controller with plug and play harness for easy install, and high lift camshaft to make use of the added power. Piston kit is available separate if you already have a programmable fuel controller and camshaft. Double check clearances as this piston will not work with all aftermarket cams.