Wiseco Mitsu 4G64 w/4G63 Heads 10.5:1 E85 Single Piston

If you're building a high-performance Mitsubishi engine using a 4G64 block with 4G63 heads, these single pistons from Wiseco are a solid choice. They're designed for a 10.5:1 compression ratio, making them well-suited for E85 fuel, which can handle more boost and detonation resistance than gasoline. Wiseco makes these pistons from 2618 aluminum, a material known for its improved tensile strength, which is crucial when you're pushing an engine hard.

These aren't just basic pistons; they're built for serious use. You'll find precision ring grooves, anti-detonation grooves, and features that help seal the rings better, all contributing to improved performance and durability under heavy loads. They also come with an ArmorGlide skirt coating that helps reduce friction and noise, while also resisting seizure. The fully machined crown and forced pin oiling are details that show these are made for demanding applications where reliability is key.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. They are sold individually, so be sure to order the correct quantity for your engine build.