JE Pistons COSWORTH N5B 94mm Bore 8:1 KIT Set of 4 Pistons

Forged in the USA from 2618 aluminum, these JE Pistons are built for high-demand performance applications. They feature a proprietary Forged Side Relief (FSR) design, which helps minimize friction and power loss by reducing skirt width. This design also saves weight with a shorter wrist pin, making them a solid choice for serious engine builds. The 94mm bore and 8:1 compression ratio are specifically tailored for the Cosworth N5B engine, aiming for optimized performance and durability.

JE Pistons brings over 75 years of experience to their forged piston sets. Each set is engineered and machined in the USA to provide the ultimate combination of durability and performance. Depending on the specific application, these pistons may include an accumulator groove to help reduce combustion gas pressure, which can prevent ring flutter and improve ring seal for consistent power delivery. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, while also contributing to quieter operation. This kit includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings, ensuring you have the essential components for installation.

This set is designed for the Cosworth N5B engine and includes four pistons, wrist pins, locks, and premium piston rings. Please note that this part is not CARB approved and cannot be shipped to California.