Manley 592570C-8 Forged Piston Set 4.070" Bore 2618 Alloy Flat Top

The Manley 592570C-8 forged piston set is engineered for high-performance applications requiring precise tolerances and exceptional durability. Machined from premium 2618 alloy material, these pistons deliver maximum high-temperature strength and fatigue resistance for demanding racing and street/strip builds. The -4cc flat top design provides versatile compression ratio options while the contour forging process ensures optimal strength-to-weight balance at just 457 grams per piston (552g with pin included).

Key Specifications:

• Bore: 4.070 inches
• Compression Distance: 1.304 inches
• Rod Length: 6.125 inches
• Stroke: 3.622 inches
• Pin Diameter: 0.927 inches
• Compression Ratios: 11.1:1 @ 64cc, 10.8:1 @ 66cc, 10.3:1 @ 70cc, 10.1:1 @ 72cc
• Ring Package: 1.5mm, 1.5mm, 3mm Total Seal configuration

Performance Features:

• 2618 forged alloy construction for superior high-temperature strength and thermal expansion properties
• Single-fixturing manufacturing process ensures perfect ring groove to skirt squareness for maximum cylinder seal and horsepower
• Proprietary multi-step top ring groove machining delivers precise size, geometry, flatness and finish
• Contour forgings maintain grain structure integrity with no grain-interrupting internal milling
• Offset wrist pin design reduces piston rock for quieter operation and improved performance
• Moly-coated skirts reduce friction and provide superior wear resistance
• Pressure balance groove included for improved ring seal stability
• Federal Form-Scan gauging validates ideal skirt indexing and polarity

Complete Kit Includes:

• Forged pistons with moly-coated skirts
• Tool steel wrist pins
• Round wire locks
• Total Seal ring package (1.5/1.5/3mm)

Important Note: Compression ratios are calculated at 0.00 deck clearance, 9.240-inch deck height, and 0.042-inch thick compressed head gasket. Verify all measurements for your specific application to ensure proper fitment and compression ratio.