JE Pistons FOCUS ST 2.5 8.5:1 KIT Set of 5 Pistons

If you're rebuilding the engine in your Ford Focus ST with the 2.5L engine, this set of five forged pistons from JE Pistons is a solid choice for high-demand performance applications. JE Pistons has been making forged pistons for over 75 years, and they build these specifically for each engine they design them for, aiming for the best balance of durability and performance. They're forged and machined right here in the USA using 2618 aluminum, which gives them the strong tensile strength needed when you're pushing your engine hard.

This kit includes a set of five pistons, each with an inverted dome/dish design, a 3.287-inch bore, and a 0.827-inch wrist pin. They also feature JE's proprietary Forged Side Relief (FSR) forging design, which helps reduce friction and power loss by using a narrower skirt and a shorter wrist pin, saving 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, and a skirt coating to cut down on friction, wear, and noise. These pistons are designed to optimize performance and durability for your specific engine use.

This kit comes complete with high-quality wrist pins, locks, and JE Pro Seal premium piston rings, so you have most of what you need to get your engine back together. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.