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If you're looking for pistons with an unbeatable combination of performance and value, then Speed-Pro hypereutectic pistons are for you. These pistons are manufactured from aluminum alloy that contains 16 percent silicon for greater strength and wear resistance. They're also molded in the latest permanent-mold technology to ensure the precise fit and tight bore clearances that today's top engine builders demand. Hypereutectic pistons are ideal for use in high performance street, bracket, and oval track racing—and will work perfectly with normal ring end gaps.

• Manufacturer's Part Number: H116CP 30 
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• Piston Rings Included: No 
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• Bore (in): 4.030 in. 
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• Bore (mm): 102.362mm 
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• Stroke: 3.580 in. 
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• Engine Stroke Type: Stock 
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• Rod Length: 6.123 in. 
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• Piston Style: Flat top, with two valve reliefs 
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• Piston Material: Hypereutectic aluminum 
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• Compression Height (in): 1.660 in. 
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• Piston Head Volume (cc): +5.00cc 
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• Wrist Pin Style: Press-fit or floating 
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• Wrist Pin Retainers Included: No 
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• Wrist Pin Included: Yes
   
• Pin Diameter (in): 0.984 in. 
• Piston Ring Thickness: 5/64 in. x 5/64 in. x 3/16 in. 
• Quantity: Sold as a set of 8. 
• Notes: DurOshield® coated piston skirt and CNC machined.