VERTEX 2-stroke pistons are gravity-cast using an aluminum alloy with 18% silicon content. Silicon reduces thermal expansion at operating temperatures, minimizing piston slap and reducing the risk of fractures. Additionally, silicon enhances the wear resistance of the pistons, thereby extending their lifespan. The piston kit includes piston ring(s), piston pin, and circlips. Available in different versions for 2-stroke engines: Replica = original shape piston, Race = performance-enhanced piston, Pro Race = forged specialized piston.