Wiseco 6240A6 2618 Alloy Forged Piston Open Chamber Dome 502

The Wiseco 6240A6 is a 2618 alloy forged piston engineered for high-performance and racing applications. Featuring an Open Chamber Dome (502 Dome) design, this lightweight drag piston is built to fit a 9.750 deck height and is sold as an individual/replacement piston. Wrist pins (S460) are included. Rings are sold separately — recommended ring set: W100H8-4560-5.

Wiseco draws on decades of race-winning experience across the most demanding motorsports platforms — including Formula 1, IndyCar (IRL), NHRA Pro Stock, MotoGP, AMA Superbike, and AMA Supercross — to manufacture pistons that deliver the highest levels of performance and reliability.

Key Features:

• 2618 Alloy Forging: High-strength forged aluminum alloy construction engineered to withstand extreme heat and mechanical stress in race and high-performance environments.
• Open Chamber Dome (502 Dome): Optimized crown geometry designed to promote maximum intake charge efficiency and support high-compression applications.
• Full Round Skirt: Provides stability in the bore for optimum ring seal and reduced piston rock.
• Valve Pocket Design: Engineered to maximize flow around the valve, allowing the use of oversized valves and high-lift camshafts.
• Precision Ring Grooves: Machined to exact tolerances with calculated groove root diameters and axial widths for maximum ring seal and minimized blow-by and oil consumption.
• Optimized Quench Geometry: Piston dome shape promotes resistance to detonation and pre-ignition during the compression/combustion cycle, extending engine life and improving horsepower potential.
• ISO-Certified Forging Facility: Manufactured using complex forged shapes, advanced materials, and feature-aligned grain flow technology.
• ArmorGlide Skirt Coating: Wiseco's proprietary dry-film lubricant coating reduces friction, improves wear resistance, and allows tighter bore fitment for better ring seal and reduced piston noise.

Included & Recommended Components:

• Includes wrist pins: S460
• Rings sold separately — Recommended ring set: W100H8-4560-5

Built for serious racers and performance engine builders, the Wiseco 6240A6 forged piston delivers the precision, strength, and technology required to build a competitive, reliable high-performance engine.