GM LS FT Piston Set 4.070 Bore -4.1cc

The GM LS FT Piston Set 4.070 Bore -4.1cc from RACE TEC PISTONS is designed for serious LS engine builders and performance enthusiasts seeking maximum reliability in high-horsepower applications. These forged pistons are engineered to withstand the demands of turbocharged, supercharged, and naturally aspirated LS builds where stock components may not suffice.

Featuring a 4.070-inch bore diameter and a -4.1cc dish design, these pistons reduce combustion chamber volume, improving compression ratios and flame front velocity. The forged construction offers superior resistance to detonation and fatigue cracking compared to cast alternatives, making them ideal for high-performance applications. The negative dish geometry enhances combustion efficiency, resulting in cleaner burns and improved power output across the RPM range.

This piston set is compatible with LS1, LS2, LS3, and LS7 engine platforms, particularly in applications that require increased displacement or boost tolerance. It is crucial for installers to verify that the bore size matches precisely and to confirm ring end-gap clearance before assembly to ensure optimal performance. Professional machine work is strongly recommended for best results.