JE Pistons HONDA B18C1 81.5 KIT Set of 4 Pistons

This JE Pistons kit gives you a complete set of four forged pistons, along with high-quality wrist pins, locks, and JE Pro Seal premium piston rings. These pistons are specifically made for the Honda B18C1 engine, with a bore size of 3.209 inches (81.5mm) and an inverted dome/dish design to achieve a 9.00:1 compression ratio. They are forged in the USA from 2618 aluminum, a material known for its high tensile strength, making it well-suited for high-demand performance applications.

JE Pistons has applied over 75 years of experience to these components, focusing on durability and performance. The proprietary Forged Side Relief (FSR) forging design helps minimize friction and power loss by reducing skirt width and using a shorter wrist pin, which also saves weight. Depending on the specific application, these pistons may also feature an accumulator groove to reduce combustion gas pressure, improving ring flutter and seal for consistent power. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, while also helping to quiet down operating noise. Every part of this kit is made 100% in the USA.

When rebuilding or upgrading your B18C1 engine for performance use, these pistons are designed to handle the stresses of racing applications. Please note that this kit is not CARB approved and cannot be shipped to California. Always refer to manufacturer installation instructions for proper fitment and assembly procedures.