JE Pistons 4.6 4V MODULAR 9.5:1 Set of 8 Pistons

Forged from 2618 aluminum, these JE Pistons are built for high-demand performance applications. This set is specifically designed for the 4.6L 4V Modular engine, featuring a 9.5:1 compression ratio. JE Pistons brings over 75 years of experience to the table, engineering and manufacturing these pistons entirely in the USA to ensure top-notch durability and performance for your build.

The proprietary Forged Side Relief (FSR) design is a notable feature, minimizing friction and power loss by using a reduced skirt width. This design also saves weight by incorporating a shorter wrist pin. Depending on the specific application, these pistons may also include an accumulator groove to help manage combustion gas pressure, which can reduce ring flutter and improve ring seal for more consistent power delivery. Some applications also benefit from a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

When you're building a performance engine, especially one that will see demanding use, the quality of the internal components is critical. JE Pistons are proven in various racing environments, and this set is engineered for optimized performance and durability for your specific engine and use case. They are made 100% in the USA, ensuring a high standard of manufacturing.