BBC Domed Piston Set 4.155 Bore +17cc

The BBC Domed Piston Set 4.155 Bore +17cc from KB Performance Pistons is engineered for big block Chevy engines requiring premium hypereutectic pistons with aggressive dome geometry. This eight-piston set is designed for high-performance builders, engine shops, and enthusiasts seeking reliable top-end components for naturally aspirated and moderate boost applications. The +17cc dome volume increases compression ratio and promotes efficient combustion chamber design, making this piston set ideal for street performance, bracket racing, and marine engines where durability and consistency are non-negotiable.

KB Performance Pistons manufacture this set using hypereutectic alloy technology, which delivers superior strength-to-weight characteristics compared to traditional cast iron. The 4.155-inch bore specification accommodates factory and custom block configurations, while the 5/64 x 5/64 x 3/16-inch ring groove pattern supports modern piston ring technologies for reduced blowby and extended engine life. The domed piston head creates favorable combustion chamber geometry that enhances flame travel and burn efficiency, while the +17cc displacement adds measurable compression lift to your engine platform without requiring block modification or custom machining.

Engine builders and performance shops specify the BBC Domed Piston Set 4.155 Bore +17cc for 454, 427, and 406 big block Chevy builds where OEM or stock-replacement pistons cannot deliver the desired performance envelope. This set is compatible with factory and performance connecting rods, though proper clearance verification and rod ratio analysis are essential during assembly. Installation requires precise honing, ring gap setting, and valve-to-piston clearance checking to ensure optimal fit and longevity in your specific engine configuration.