Manley 28572HX BBC 572 Rotating Assembly Kit 4.250" Stroke 4.625" Bore -3cc Flat Top

The Manley 28572HX is a complete Big Block Chevy 572 cubic inch rotating assembly kit built for serious performance engine builders. Featuring a 4.250-inch stroke paired with a 4.625-inch bore and -3cc flat-top pistons, this internally balanced kit delivers everything needed to assemble a powerful, reliable BBC stroker bottom end.

Key Features:

• 4340 Forged Steel Crankshaft — 4.250-inch stroke; heat treated, stress relieved, shot peened, nitrided, and 100% Magna-Fluxed for maximum strength and durability
• 4340 Forged H-Beam Connecting Rods — 6.385-inch length; heat treated, stress relieved, shot peened, nitrided, and 100% Magna-Fluxed
• ARP 2000 Cap Screws — 7/16-inch hardware rated up to 1,500 hp (the "HX" designation denotes ARP 2000 upgraded rod bolts)
• Manley 2618 Platinum Series Forged Aluminum Pistons — 4.625-inch bore, 1.395-inch compression height, -3cc flat-top design; ideal for power-adder and high-boost applications
• Premium Chromoly Wrist Pins — included for precise fit and long-term durability
• Total Seal Piston Rings — high-performance file-fit rings included
• Clevite Bearings — "H" Series narrowed rod bearings and "P" or "H" Series main bearings included
• Internally Balanced — precision balanced in-house by Manley
• 2-Piece Rear Main Seal — compatible with standard BBC block configurations

Designed for the 9.800-inch deck height Big Block Chevy block, this rotating assembly is engineered for street/strip and competition applications where reliability under extreme loads is essential. The -3cc flat-top piston design allows builders to fine-tune compression ratio using head gasket and chamber volume selection. With every major component purpose-built and matched by Manley, the 28572HX simplifies the build process while delivering professional-grade quality throughout.