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10-137 Hays Billet Steel SFI Certified Flywheel- Big Block Chevrolet

Fits 1990-2000 Big Block Chevy 454, 29 LB, External Balance, 153-tooth;SFI-approved – legal for use in racing classes that require SFI certification; Choose precision CNC-machined 1045 billet steel for maximum strength and durability; CAD designed to provide optimum performance and reliability; 42.54oz External balanced version;