
VERTEX Cast Piston — manufacturer reference 22402A. Designed for motocross use, this VERTEX piston is a machined aluminum replacement part, intended for engine builders looking for a part that meets oversized bore dimensions. Compact and robust, it fits into the 60 cm3 engines listed below.
Main compatibilities: KTM 60 SX (1998 - 60 cm3) and KTM 60 SX (1999 - 60 cm3). Before installation, check the bore and tolerances of your cylinder as well as the condition of the rings, liner, and connecting rod. This reference corresponds to an oversized piston (letter A) — useful during a re-boring or replacement after wear.
For reliable installation: check the alignment of the ring grooves, axial play, and pin diameter. If in doubt, entrust the installation to a qualified workshop to ensure the longevity of the piston/cylinder assembly.