BBC Domed Piston Set 4.280 Bore +14cc

The BBC Domed Piston Set 4.280 Bore +14cc from Sportsman Racing Products is purpose-built for big block Chevy engine builders and marine performance enthusiasts seeking reliable, high-compression combustion geometry. These forged pistons are engineered for boaters and engine shops who demand precision components capable of withstanding sustained high-load conditions. The small dome profile and +14cc compression volume make this piston set ideal for builds targeting increased horsepower and torque output without sacrificing durability or longevity on the water or in competition.

Each piston in this eight-piece set features a forged construction that resists deformation under extreme pressure and temperature swings typical of marine duty cycles. The 4.280-inch bore sizing pairs with precisely machined ring grooves (5/64 x 5/64 x 3/16 inch) to ensure optimal ring seal and minimal blow-by, critical factors for efficient power transfer and engine longevity. The small dome design raises compression ratio while the +14cc displacement increase per piston boosts overall engine displacement and breathing capability, allowing intake charge density and combustion efficiency to work together for superior performance metrics.

Marine builders, drag racing shops, and performance boaters preparing big block Chevy platforms benefit most from this piston set's forged durability and compression characteristics. Installation requires professional engine machining and assembly; these pistons demand precision bore preparation and proper ring gap clearancing before deployment. Compatibility is strictly limited to big block Chevy platforms with 4.280-inch bore specifications; verify your engine's exact bore diameter and rod length before ordering to ensure correct fit and optimal performance.