Vertex Top End Piston Kit Yamaha YZ/WR125 05-21 XE-XX125 21-22 (53.95)

2-Stroke Pistons: Contain 18% silicon to reduce wear and thermal expansion, enabling tighter running tolerances for increased power, reduced noise, and longer lifespan. Piston Options Advanced Skirt Coating: High-tech Molybdenum Disulphide (MOS2) coating reduces wear and improves break-in performance.

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