SBC PowerPak F/T Piston Set 4.155 Bore

The MAHLE PISTONS SBC PowerPak F/T Piston Set 4.155 Bore is designed for small-block Chevrolet engine builders who demand reliable performance in forced-induction applications. This piston set is suitable for both naturally aspirated and supercharged/turbocharged builds, ensuring durability and consistent ring seal. Whether you're refreshing a classic 350 or building a modern high-output engine, this piston set provides the engineering foundation that serious enthusiasts require.

MAHLE's PowerPak F/T series utilizes advanced aluminum alloy technology, featuring optimized ring grooves and skirt profiles that can withstand elevated combustion pressures. The 4.155-inch bore size is compatible with both factory and aftermarket block specifications, making it versatile for various SBC generations. Precision manufacturing ensures minimal weight variance across all eight pistons, which is crucial for reducing vibration harmonics at high RPM.

Builders targeting 400+ horsepower applications will find this piston set an excellent choice for both street and competition vehicles. The F/T designation indicates a forged-quality strength level, with thermal properties that resist detonation and maintain ring tension under boost or nitrous oxide exposure. This piston set is ideal for blocks already bored to 4.155 inches or those receiving a fresh hone to achieve the final dimension.