JE Pistons Piston Set - 99.5mm Bore / CR 8.5 - Set of 4 - Subaru STI EJ257 PDM_brake-linesAs the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for European, import and sport compact applications. Engineered, forged and machined 100% in the USA, JE Pistons are designed for each specific engine and racing application to provide the ultimate combination of durability and performance. From drift track to drag strip, JE Pistons? performance is proven in victory
ensuring optimal longevity in high temperature environments
feel free to reach out to our support team with any questions
Includes all required hardware
2015-2021 Subaru STI ACT Performance Street Sprung Disc
The EJ Rear Main Seal Installer perfectly sets and centers the seal so that the installation provides the perfect seal depth with no guesswork every time
Direct OEM-style replacement fitment
3D Construction — Conforms to Turbocharger Housing Shape
and AEM has designed an awesome gauge to monitor just that
This pipe utilizes the Mishimoto air straightener and CNC-machined mass airflow sensor (MAF) housing to provide accurate and consistent MAF readings
Employing rigorous standards for quality and using the latest in manufacturing technologies
Shock body length adjustable
This is the middle ground between the FR-Spec's pure pillow ball mount and the F-Spec's fully rubber-isolated top hat — you get meaningful camber adjustment for alignment optimization without the harshness of a full pillow ball setup
