GM LS Piston Set 4.075 Bore -13.4cc

The GM LS Piston Set 4.075 Bore -13.4cc is specifically engineered for LS engine builders and performance enthusiasts who demand precision-forged internals for high-RPM applications. This piston set is ideal for those building strokers, preparing for forced induction, or maximizing naturally aspirated output.

The -13.4cc dish design influences the combustion chamber volume, allowing builders to achieve desired compression ratios without additional block modifications or thinner head gaskets. This geometry is critical for tuning power output across both naturally aspirated and boosted platforms, where chamber volume directly influences ignition timing, fuel requirements, and peak pressure characteristics.

LS platform builders developing drag, road race, or street performance engines rely on piston sets like this for bottom-end durability and tuning flexibility. The 4.075-inch bore specification matches modern LS variants and popular stroker combinations, ensuring proper wall thickness and ring seal integrity.