The VERTEX Race Evolution piston kit is meticulously engineered for racing use, making it the ultimate performance weapon among pistons. VERTEX 2-stroke pistons are gravity cast from an aluminum alloy containing 18% silicon. The silicon component reduces thermal expansion at operating temperatures, minimizing risks of piston slap and breakage. Additionally, silicon enhances the wear resistance of the pistons, extending their lifespan. The TopEnd Piston Kits from VERTEX include everything needed for a piston replacement (piston, piston rings, piston pin bearing, retaining clips, etc.). VERTEX is an OEM supplier for some of the largest motorcycle manufacturers, and many factory teams in the MXGP rely on VERTEX for their superior performance. The kit is specifically tailored for FANTIC and YAMAHA Race Evo models, ensuring optimal compatibility and peak racing efficiency.