JE Pistons COSWORTH N5B 93mm 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. The 2618 aluminum alloy offers high tensile strength, which is crucial for engines pushed to their limits. This specific kit is designed for the Cosworth N5B engine, featuring a 93mm bore and an 8:1 compression ratio, ideal for forced induction setups where controlled combustion is key. Each piston utilizes JE Pistons' proprietary Forged Side Relief (FSR) design, which helps minimize friction and power loss by reducing skirt width. This design also contributes to weight savings, especially when paired with the shorter wrist pin included in the kit.

Beyond the core forging, JE Pistons incorporates features to enhance durability and performance. An accumulator groove, depending on the specific application, can help manage combustion gas pressure, reducing ring flutter and improving ring seal for consistent power delivery. If your application includes a skirt coating, it further reduces friction and wear on the piston skirts and cylinder walls, which also helps to quiet down operating noise. These pistons are engineered specifically for the intended engine and use, ensuring optimized performance and longevity. This kit comes complete with high-quality wrist pins, locks, and JE Pro Seal premium piston rings, so you have everything needed for installation.

When rebuilding or upgrading an engine that requires robust internal components, these JE Pistons offer a well-built solution. They are made 100% in the USA, reflecting a commitment to quality manufacturing. Please note that this kit is not CARB approved and cannot be shipped to California.