Piston Kit

The Mahle PowerPak Piston and Ring Kit is specifically engineered for 2015 to 2021 Subaru 4-Cylinder H4 models, offering a significant boost in power and efficiency. These pistons are made from robust 4032 forged aluminum for exceptional strength and durability in high-performance applications. The kit includes low-drag rings to reduce friction and enhance engine efficiency, along with steel pins and wire locks for secure assembly. The pistons feature a thermal barrier coating to protect against extreme temperatures and a proprietary Grafal anti-friction coating on the skirts to minimize wear and improve performance during initial start-up.