Description

Athena 4T Piston Kit Ø 76.96 mm P5F0770212009B for Yamaha WR/YZ 250 F
Elevate your engine´s performance and restore its power with the Athena 4T Piston Kit, meticulously engineered for the latest generation of Yamah´s premier 250cc off-road machines. Designed as a superior-quality replacement for your top-end rebuild, this piston kit is the definitive choice for riders demanding enhanced reliability, increased resistance, and peak performance without compromise. It represents the pinnacle of Italian engineering, combining advanced materials and manufacturing processes to deliver a component that not only meets but exceeds original equipment standards.
At the core of this kit is a piston forged from a cutting-edge, high-performance aluminum alloy with a high silicon content. This specialized material guarantees the same exceptional reliability of the OE piston, while simultaneously providing greater resistance to thermal stress and wear, ensuring longevity even under the most demanding race conditions. The piston´s design features a smooth profile, an engineering detail that is crucial for optimizing engine dynamics. This profile ensures a regular, uninterrupted intake flow and promotes perfect flame propagation during the combustion cycle, resulting in improved efficiency, crisp throttle response, and maximized power output.
Athen´s commitment to precision is showcased in its state-of-the-art manufacturing. The pistons for 4-stroke Off-Road motorcycles are made by reverse extrusion and produced on sophisticated numerical control (CNC) machines. This advanced process yields a piston with unparalleled dimensional accuracy, a perfect weight balance, and a flawless finish, guaranteeing a perfect fit and smooth operation within the cylinder.
The performance gains are further amplified by the technologically advanced piston rings. Engineered to create less friction with the cylinder wall, these rings effectively reduce parasitic power loss, allowing the engine to rev more freely and deliver higher performance across the entire RPM range. The segments included are Made in Japan, a testament to their quality, and feature advanced wear-resistant coatings (PVD or chromium nitride). This specialized treatment dramatically increases the retain and durability of the rings, ensuring a consistent and reliable seal for countless hours of aggressive riding.
This complete Piston Kit with Gaskets provides everything you need for a professional-grade top-end service, ensuring a perfect seal and restoring your engine´s heart to better-than-new condition.
Technical Specifications:
* Product: Athena 4T Piston Kit
* Part Number: P5F0770212009B
* Piston Diameter: Ø 76.96 mm
* Category: Engine
* Subcategory: Top end
* Attributes: Piston, Sets
Compatible models:
YAMAHA WR 250 F 2024-2024.
YAMAHA YZ 250 F 2024-2024