BBM Domed Piston Set 4.280 Bore +6cc

The BBM Domed Piston Set 4.280 Bore +6cc from KB Performance Pistons is designed for high-performance and racing applications, where optimizing compression ratios and ensuring reliable power delivery are essential. This piston set is tailored for both enthusiasts and professional engine builders who require precision-engineered components capable of withstanding the demands of modified and turbocharged engines.

Featuring a domed crown design and a +6cc displacement increase, this piston set is critical for achieving optimal compression ratios in both street and competition builds. Each piston is constructed from KB Performance's proven forged aluminum, designed to handle high boost levels and sustained high RPM operation without deformation. The unique geometry of the domed crown raises the combustion chamber peak, enhancing fuel efficiency and combustion efficiency at peak fire points.

This piston set is ideal for engine builders working on stroker assemblies, turbocharged platforms, or naturally aspirated high-compression builds that require validated OEM specifications. The precise +6cc dome volume is calculated to deliver measurable gains in torque and horsepower when paired with appropriate cylinder head modifications and fuel octane ratings. With KB Performance's tight tolerances and advanced piston pin design, users can expect minimal friction loss and extended service life.