Mahle MS Piston Set Subaru 2.5L 99.50mm Bore 79mm Stroke 130.5mm Rod 23mm Pin -22cc 8.5 CR Set of 4

Engineered for discerning performance enthusiasts, the Mahle PowerPak Plus piston and ring kit represents precision engineering and craftsmanship. Designed specifically for Subaru's 4-cylinder H4 models from 2015 to 2021, this kit is an essential upgrade for those seeking to enhance the dynamism of their powertrains. Each piston is meticulously forged from 2618 aluminum, a material renowned for its strength-to-weight ratio and thermal stability, ensuring exceptional performance under extreme operating conditions. Every aspect of the Mahle PowerPak Plus kit has been thoughtfully considered. The pistons undergo a rigorous hand-deburring process followed by a phosphate coating, which not only enhances durability but also reduces friction. Mahle's proprietary Grafal anti-friction coating further minimizes wear, allowing for smoother operation and extended longevity. The thermal barrier coating (TBC) applied to the pistons enhances heat resistance, ensuring optimal performance even in the most demanding environments.