The VERTEX 2-stroke pistons are manufactured using gravity casting from an aluminum alloy comprising 18% silicon. The inclusion of silicon reduces thermal expansion at operating temperatures, making the piston less susceptible to clatter and fracture damage. Additionally, silicon provides the piston with better wear characteristics, thereby extending its lifespan. This piston kit comes complete with rings, wrist pin, and circlips. VERTEX offers three variants for 2-stroke engines: Replica - matches the original design, Race - performance-enhancing, and Pro Race - a forged specialty piston.