The VERTEX 2-stroke pistons are gravity cast from an aluminum alloy containing 18% silicon. The addition of silicon reduces thermal expansion at operating temperatures, leading to a lower likelihood of piston slap and breakage. Silicon also enhances the wear resistance properties of the pistons, thereby extending their lifespan. Each piston kit includes the piston, piston ring(s), piston pin, and circlips. Available in three variants: Replica which matches the original design, Race for performance enhancements, and Pro Race which features a forged special piston. Suitable for KTM, HQV, and GASGAS models, this is an excellent choice for anyone seeking durability and reliability.