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Upgrade your Yamaha YZ125 with the ATHENA P400485100029 cylinder kit, engineered for high-performance motocross and off-road riding. This kit features an aluminum cylinder with a durable nickel carbide coating, providing excellent wear resistance and thermal stability. The aluminum cylinder head includes a removable bronze dome for ease of maintenance and customization. Designed for optimal power output, the kit incorporates specially designed, hard anodized power valves that are not compatible with OEM components, ensuring maximum performance in demanding riding conditions. The included Athena top end gasket set comes complete with all necessary seals and hardware, simplifying installation and ensuring a reliable seal for long-lasting performance. The piston kit comprises a lightweight cast flat top piston, piston rings, clips, and a pin, all engineered to deliver smooth operation and durability. Overall, this kit is an ideal upgrade for riders seeking increased horsepower, improved throttle response, and enhanced engine reliability. Suitable for competitive racing or serious trail riding, the ATHENA cylinder kit offers a significant boost over stock components, combining quality craftsmanship with advanced materials for superior engine performance.
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