JE Pistons 181908L Forged Flat Top Piston Bore CD Pin - 2618 4.040 1.000 0.927 Single

The JE Pistons 181908L is a single forged racing piston precision-machined from 2618 aluminum alloy, offering exceptional strength and thermal tolerance for high-performance and competition engine builds. With a 4.040-inch bore diameter, 1.000-inch compression distance (CD), and a 0.927-inch wrist pin diameter, this flat-top piston is engineered for builders who demand exacting specifications and reliable power output under extreme conditions.

Forged from low-silicon 2618 aluminum alloy, this piston is purpose-built to withstand the rigors of forced induction, high-compression, nitrous, and high-RPM naturally aspirated applications. The 2618 alloy provides superior ductility and impact resistance compared to 4032 alloys, making it the preferred choice for race engines operating at elevated temperatures and pressures.

Key Features:

• Forging Material: 2618 aluminum alloy for maximum strength and heat resistance
• Crown Style: Flat top design for versatile compression ratio tuning
• Bore Diameter: 4.040 inches
• Compression Distance (CD): 1.000 inch
• Wrist Pin Diameter: 0.927 inch
• CNC-machined to tight tolerances for consistent performance across all cylinders
• Designed and manufactured in-house by JE Pistons using industry-leading forging technology

JE Pistons has been the leader in forged racing pistons for over 70 years, supplying top engine builders and race teams competing in NASCAR, NHRA, SCORE, and countless other forms of motorsport. Sold individually, the 181908L is ideal for engine builders who need to replace or mix-and-match pistons to achieve a precise, custom build.