JE Pistons MITSU 4G63 EVO KIT Set of 4 Pistons

If you're rebuilding the engine in your Mitsubishi Lancer Evolution VII through IX, this JE Pistons kit is built for serious performance. These aren't your everyday pistons; they're forged from 2618 aluminum, a material chosen for its high tensile strength, which is crucial when you're pushing an engine hard. JE Pistons has been making performance pistons for over 75 years, and they build these right here in the USA, specifically for the 4G63 engine.

What sets these apart is the attention to detail. They feature a proprietary Forged Side Relief (FSR) design that helps reduce friction and skirt wear, saving a little weight in the process. Depending on the specific application, you might also find an accumulator groove to help reduce combustion gas pressure and improve ring seal, along with a skirt coating to further cut down on friction and noise. This kit comes complete with high-quality wrist pins, locks, and JE's Pro Seal premium piston rings, so you have everything you need to get them installed.

This set is designed for a 3.386-inch bore and includes pistons with an inverted dome/dish shape, aiming for an 8.50:1 compression ratio. It's important to note that these pistons are not CARB approved and cannot be shipped to California. For builders aiming for maximum durability and performance from their 4G63 engine, these JE Pistons are a well-built choice.