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The WISECO RE802M07700 piston kit is specifically engineered to enhance performance and durability for Yamaha YZ250F, FX, and WR250F models. Crafted from 100% billet aluminum, this piston offers a superior strength-to-weight ratio, ensuring reliable operation under high-stress conditions. The kit includes a precision-fit compression ring, piston pin, and circlips, providing a complete upgrade for your engine. The high compression ratio of 14:1 for 450cc and 14.5:1 for 250cc models delivers maximum torque and rapid throttle response, making it ideal for competitive riding or demanding trail use. The dome design optimizes flame travel, improving air/fuel combustion efficiency and overall engine performance. The asymmetric skirt design enhances wear resistance and promotes even loading on the thrust skirt, contributing to longer piston life and consistent performance. The DLC-coated piston pin reduces friction and scuff resistance, while enhanced pin oiling ensures optimal lubrication, further extending component longevity. Features such as the pressure seal groove help prevent ring lifting, reducing power loss, and the ArmorGlide® skirt coating minimizes friction and noise, providing smoother, quieter operation. Built in the USA, this piston kit is a reliable upgrade for riders seeking power gains and engine durability in their Yamaha dirt bikes.
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