JE Pistons - Set of 4 Mitsubishi 4B11T 87.0mm Bore -6.8 Dome Asymmetrical FSR Pistons - Set of 4

If you're building a performance Mitsubishi 4B11T engine, these JE Pistons are a solid choice. This set includes four pistons, each measuring 87.0mm in bore diameter and featuring a -6.8cc inverted dome. JE Pistons has been a leader in forged racing pistons for over 75 years, and these are engineered specifically for the 4B11T to offer a great balance of strength and performance.

These pistons are forged in the USA from 2618 aluminum, a material known for its high tensile strength, which is crucial for high-demand performance applications. They utilize JE's proprietary Forged Side Relief (FSR) 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, they may also include an accumulator groove to help reduce combustion gas pressure, improving ring flutter and seal for consistent power. Some applications also feature a skirt coating to further reduce friction and wear on the piston skirts and cylinder walls, while also helping to quiet down operation.

This kit comes complete with high-quality wrist pins, locks, and JE Pro Seal premium piston rings, so you have the essential components ready for installation. It's important to note 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.