Manley 28555RHX BBC 555 Rotating Assembly Kit 4.560 Bore 4.250 Stroke -3cc

The Manley 28555RHX is a high-performance Big Block Chevy (BBC) 555 cubic inch rotating assembly kit designed for serious engine builds demanding maximum displacement and durability. Engineered for street/strip and competition applications, this stroker kit provides everything needed to transform a Big Block Chevy short block into a 555 cubic inch powerhouse.

This kit is built around a 4.250-inch stroke crankshaft paired with components designed for a 4.560-inch bore, delivering the full 555 cubic inch displacement. The -3cc piston configuration is designed to work with specific cylinder head combustion chamber volumes to achieve target compression ratios suitable for high-performance naturally aspirated or boosted applications.

Key Features:

• Application: Big Block Chevrolet (BBC) engine platform
• Displacement: 555 cubic inches
• Stroke: 4.250 inches
• Bore: 4.560 inches
• Piston Dish: -3cc (reverse dome / slight dish)
• Kit (KT): Complete rotating assembly components
• Manley's trademark high-strength materials and precision manufacturing tolerances
• Designed for high-horsepower performance builds

Manley Performance has been a trusted name in high-performance engine components for decades, producing parts used in professional racing and demanding street performance applications. The 28555RHX rotating assembly kit upholds that legacy, delivering the precision-engineered components needed for a reliable, high-output BBC 555 build.