ATI crankshaft step keys are designed for reducing cranks with a 1/4 in. keyway to 3/16 in.

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SCAT Crankshaft, Internal Balanced, 2-Piece, Forged 4340 Steel, Pro Series Lightweight, 4.000 in. Stroke, Holden Small Block, Each

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SCAT Crankshaft, Internal Balanced, 2-Piece W/Center CWT's, Forged 4340 Steel, Superlight, 4.250 in. Stroke, For Chevrolet Big Block, Each

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SCAT Crankshaft, Internal Balanced, 1-Piece, 2-Piece, Forged 4340 Steel, Pro Series Lightweight, 3.000 in. Stroke, For Ford Small Block, Each

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SCAT Crankshaft, Internal Balanced, 2-Piece, Forged 4340 Steel, Pro Series Lightweight, 4.000 in. Stroke, Chrysler Small Block, Each

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SCAT Crankshaft, Internal Balanced, 2-Piece, Forged 4340 Steel, Superlight, 3.750 in. Stroke, For Chevrolet Small Block, Each

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SCAT Crankshaft, Internal Balanced, 2-Piece, Forged 4340 Steel, Pro Series Lightweight, 4.000 in. Stroke, For Chevrolet Big Block, Each

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