Mahle Pistons PowerPak 99.5mm Bore 8.5:1 Comp Subaru WRX / STI EJ25 2004-2021 Dimensions These units were designed specially

These units were designed specially so that an aftermarket steering wheel installed with the quick release kit still mounts in the same location

Street performance builds

High-Strength Forged AluminumDesigned to withstand high cylinder pressures and aggressive tuning

Tein Super Racing dampers for the GT-R are designed for adjustability and durability on the racetrack

Mahle Pistons PowerPak 99.5mm Bore 8.5:1 Comp Subaru WRX / STI EJ25 2004-2021 Dimensions These units were designed speciallyPart #: 930285017 Pistons PowerPak 99. 5mm Bore; 3. 11 Stroke; 5. 137 Rod; 23mm Pin; 1. 209 C D; 8. 5: 1 Compression Ratio; 22cc DomeVolume; 399 Gram Weight [Subaru Impreza(2004 2007)] The Mahle PowerPak is a complete, race proven piston assembly kit composed of hand deburred, forged, performance coated pistons, high quality steel pins, round wire locks, and low drag performance rings. We race Mahle forged pistons in our dragster and highly recommend