GM LS7 FT Piston Set 4.130 Bore -4.1cc

The GM LS7 FT Piston Set 4.130 Bore -4.1cc from Race Tec Pistons is designed for high-performance LS engine builders and enthusiasts seeking maximum reliability in both forced-induction and naturally aspirated applications. This piston set is engineered to meet the demands of serious performance builds, ensuring durability and precision under extreme conditions.

Constructed from premium forged aluminum alloy, these pistons feature a -4.1cc dish design that enhances combustion chamber efficiency and minimizes the risk of detonation. The 4.130-inch bore specification is critical for achieving optimal clearance with LS7-family cylinder walls, which helps maintain ring seal integrity and reduces blowby during operation. The FT designation indicates a floating-pin design that allows for controlled piston-to-rod articulation, effectively reducing side-load stress.

These pistons are particularly beneficial for those building high-performance LS7 engines, but compatibility with LS3 variants may require additional modifications. Whether for street machines or dedicated track engines, this piston set provides the precision and reliability needed for high RPM operation and aggressive boost levels.