Seller notes

Vertex 23609A Forged Stroker Piston Kit (430cc) - Standard Bore 89.94mm, 11.3:1 Compression Bore: 89.94mm Compression: 11.3:1 Compression Sizing: Standard Bore All pistons are heat treated with a T-5 hardening and tempering cycle. All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life. Cast piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong pi...

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