Piston For 2024 Yz 125cc. When installing i looked at the old wossner piston with plenty of hard rode. Vertex have developed the evo piston along side supported race teams, ngage racing have tested them to destruction and now can say the evo piston is a serious performance upgrade.
Every functional part of the 2022 yz125 engine is new, including the cylinder body, cylinder head, piston, piston pin, connecting rod, crankcase and expansion chamber. Pull out the piston, take it to an auto house parts store, and ask them.