GM LS7 Dished Piston Set 4.130 Bore -20.9cc

The GM LS7 Dished Piston Set 4.130 Bore -20.9cc from Race Tec Pistons is designed for serious LS engine builders looking to enhance performance in high-compression applications. This piston set is engineered for Gen IV/Gen V LS7 platforms, making it ideal for both naturally aspirated and forced induction setups. Whether you're building a dedicated track engine or a street strip machine, these pistons provide the geometry needed for optimal efficiency.

The -20.9cc dish design effectively reduces combustion chamber volume, allowing builders to fine-tune the compression ratio without needing to modify cylinder heads or blocks. This is particularly advantageous when working with factory LS7 architecture or aftermarket heads with fixed chamber volumes. Crafted from premium forged aluminum alloy, these pistons feature pinned wrist pins and reinforced pin bosses, ensuring durability under high RPM and forced induction conditions.

Engine builders, performance shops, and automotive enthusiasts will find this piston set invaluable for achieving reliable, sustained performance. The design promotes controlled combustion characteristics, which helps prevent detonation during high-load operation. With a bore size of 4.130 inches, this piston set fits perfectly in standard LS7 blocks, making it a versatile choice for various performance applications.