The VERTEX 2-Stroke Pistons are produced through gravity casting from an aluminum alloy with 18% silicon content. The presence of silicon reduces thermal expansion at operating temperatures, providing the advantage of making the piston less prone to clattering and breakage. Additionally, silicon enhances the wear properties of the pistons, thus extending their lifespan. Each piston kit includes piston rings, piston pin, and piston pin retainers. The piston variants for 2-stroke engines are as follows: Replica (matches the original shape), Race (performance-enhancing design), Pro Race (special forged piston). Perfect for maintaining and upgrading your KTM, HQV, or HUSABERG engine, ensuring optimal performance and durability.