JE Pistons K24/K20 Bore (90mm) Size (+3.0) Dome Volume (-2.2) Asymmetrical FSR Piston Set of 4

Starting with a 2618 aluminum forging, JE Pistons crafts these pistons with a proprietary Forged Side Relief (FSR) design. This means they've reduced the skirt width and used a shorter wrist pin, which not only saves weight but also cuts down on friction and power loss. These are built for serious performance, forged and machined entirely in the USA, ensuring they can handle the demands of high-performance engines.

The asymmetrical FSR design is key here, working to minimize skirt contact and reduce drag. You'll also find a dome volume of -2.2cc, which is important for setting your compression ratio. For K24 and K20 engines, these pistons are specifically designed to optimize both performance and durability, whether you're hitting the track or pushing your street car to its limits. They're made to fit right and perform consistently.

This set includes four pistons, each with a 90mm bore size, along with high-quality wrist pins, locks, and JE's Pro Seal premium piston rings. The 2618 aluminum provides the high tensile strength needed for these demanding applications, and depending on the specific engine, you might also get an accumulator groove to reduce combustion gas pressure and a skirt coating to further cut down on friction, wear, and noise. These are a solid choice for anyone rebuilding or upgrading their K-series engine.