JE Pistons RENAULT WILLIAMS F7R 12.5:1 Set of 4 Pistons

Forged from 2618 aluminum, these JE Pistons are built for high-demand performance applications where high tensile strength is crucial. This set is specifically designed for the Renault F7R engine, featuring a 12.5:1 compression ratio and a 3.268-inch bore. JE Pistons brings over 75 years of experience to the table, engineering and machining these pistons entirely in the USA to ensure durability and optimized performance for racing and high-performance street use.

The proprietary Forged Side Relief (FSR) forging design is a key feature, minimizing friction and power loss by reducing skirt width. This design also contributes to weight savings, especially when paired with the shorter wrist pin. Depending on the specific application, these pistons may also include an accumulator groove to help reduce pressure from combustion gases, which can prevent ring flutter and improve ring seal for more consistent power delivery. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, while also helping to quiet down engine noise.

This kit comes complete with high-quality wrist pins, locks, and JE Pro Seal premium piston rings, making it a comprehensive solution for rebuilding or upgrading your Renault F7R engine. JE Pistons are proven in competition, and this set is engineered to provide the ultimate combination of durability and performance for your build. Please note that this part is not CARB approved and cannot be shipped to California.