BBM Domed Piston Set 4.350 Bore +3.5cc

The BBM Domed Piston Set 4.350 Bore +3.5cc is designed for engine builders looking to enhance compression in Big Block Mopar RB-series powerplants. This set is ideal for both automotive enthusiasts and professional mechanics who require high-performance components for street and strip applications.

Constructed from high-silicon hypereutectic aluminum alloy, these pistons provide superior strength and excellent thermal expansion characteristics compared to standard cast alternatives. The precision-engineered domed profile allows for fine-tuning of the combustion chamber volume, effectively increasing the compression ratio for improved power delivery across the RPM range. The pistons feature precision-machined ring grooves sized at 5/64, 5/64, and 3/16 inches to ensure a reliable seal under high-pressure conditions.

This set of 8 pistons is specifically engineered for Mopar RB-Series engines, making them a direct fit for blocks requiring a specific overbore. The hypereutectic material allows for tighter piston-to-wall clearances, resulting in quieter operation and reduced blow-by during cold starts. Ensure your next rebuild meets rigorous performance standards with the BBM Domed Piston Set.