Out of stock
SKU: ICNIC10009.030
UPC: 800745317896
MPN: IC10009-.030
The BBC FHR Domed Piston Set 4.155 Bore +41cc from ICON PISTONS is purpose-built for serious Big Block Chevy engine builders and performance enthusiasts seeking maximum displacement and combustion efficiency. This forged piston set of eight delivers the precision engineering required for high-horsepower applications, street performance builds, and competitive racing scenarios. The domed crown design increases chamber volume and compression characteristics, making it ideal for builders targeting aggressive power outputs and optimized fuel burn.
Each piston features forged construction for superior strength and heat resistance compared to cast alternatives, critical for turbocharged, supercharged, or high-RPM naturally aspirated engines. The 4.155-inch bore diameter accommodates big block applications with precision tolerances, while the +41 cubic centimeter dome adds significant volume to boost compression ratios and enhance combustion dynamics. Ring grooves are engineered at 1.5 mm × 1.5 mm × 3.0 mm specifications, ensuring optimal ring seal, reduced blow-by, and extended ring life. This configuration supports both stock and modified fuel systems, adapting to methanol, ethanol, or gasoline platforms depending on tune and tuning requirements.
Big Block Chevy builders upgrading to stroker or overbore configurations will benefit most from this piston set, particularly those targeting increased displacement without cylinder wall compromise. The domed design pairs effectively with high-compression heads and aggressive cam profiles, supporting power levels well beyond 600 horsepower in naturally aspirated configurations. Installation requires proper clearance verification, ring gap setting, and pin fit confirmation—standard procedures for any performance forged piston application. Weighing 16.25 pounds for the complete eight-piston set, this package offers the structural integrity and performance repeatability demanded by professional engine shops and dedicated enthusiasts alike.
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