VERTEX Top End Piston Kit (Cast Replica) is an OEM-style replacement for refreshing your 85cc 2-stroke top end with reliable fit and fast break-in. The gravity-cast aluminum piston is heat-treated and features a molybdenum-disulphite skirt coating for longer life.
Bring back crisp compression and reliable performance with the VERTEX Top End Piston Kit (Cast Replica). This kit is built as a true OEM-form replacement, making it a smart choice when your 85cc 2-stroke needs a top-end refresh. The piston is gravity-cast from a lightweight yet strong aluminum alloy and then heat-treated, while the skirt’s molybdenum-disulphite coating helps reduce friction for a faster break-in and extended service life.
If your bike is getting harder to start, feels down on power, or you’re simply servicing by hours, this complete top-end kit helps you rebuild efficiently with the core components matched to work together—so you can get back to consistent performance with less guesswork.