BBM Flat Top Piston Set 4.280 Bore -8cc

The BBM Flat Top Piston Set 4.280 Bore -8cc is a high-performance engine component designed specifically for enthusiasts rebuilding or upgrading Mopar B-Series big block engines. These pistons provide a reliable foundation for street and strip applications where increased displacement and optimized compression are required. By utilizing a 4.280-inch bore size, these components allow builders to refresh seasoned engine blocks while maintaining the structural integrity necessary for high-output powerplants.

Engineered from a high-silicon hypereutectic aluminum alloy, these KB Performance Pistons offer superior thermal expansion control and strength compared to standard cast alternatives. The design features a flat top profile with -8cc valve reliefs to ensure adequate clearance for performance camshaft profiles while maximizing combustion efficiency. This set is precision-machined with 5/64-inch top and second ring grooves alongside a 3/16-inch oil ring groove to provide consistent oil control and cylinder sealing under heavy loads.

This set of eight pistons is the ideal choice for Mopar 383 or 400 cubic inch engine builds looking for a durable, cost-effective solution that outperforms basic replacement parts. When you buy this kit for your next engine project, you are investing in components that bridge the gap between stock performance and full-race forged pistons. Review the provided bore specifications and ring groove dimensions to ensure compatibility with your specific Mopar B-Series rotating assembly and cylinder head configuration.