JE Pistons COSWORTH N5B 8:1 KIT Set of 4 Pistons

JE Pistons is known for making strong, reliable forged pistons that have proven themselves on the race track for over 75 years. This JE Pistons COSWORTH N5B 8:1 KIT is a set of four pistons designed specifically for your engine to give you the best combination of durability and performance. They are forged and machined right here in the USA using 2618 aluminum, which gives them the high tensile strength needed for demanding performance applications.

These pistons feature 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 too. Depending on your specific application, they might also include an accumulator groove to help manage combustion gas pressure, improving ring seal and keeping power consistent. A skirt coating, also application-dependent, further reduces friction and wear on the cylinder walls, while also cutting down on operating noise. This kit comes complete with high-quality wrist pins, locks, and JE Pro Seal premium piston rings, so you have everything you need to get them installed.

This kit is designed for a 3.593-inch bore and offers an 8.00:1 compression ratio with an inverted dome/dish design. Please note that this kit is not CARB approved and cannot be shipped to California.