Tomei 99.75mm Forged Piston Kit for (EJ25/EJ20 Turbo) - Fits Subaru 06-14 WRX / 04-21 STI subaru-baja-turbo-2006 Main Tubing Diameter: 3"

Main Tubing Diameter: 3"

Includes preassembled stainless steel braided oil lines with -10AN fittings

Addresses and removes the OEM Fuel Pressure Damper that causes the stumble issue

Smart Trumpet Design

850 Series Steel Flywheel by Clutch Masters

Tomei 99.75mm Forged Piston Kit for (EJ25/EJ20 Turbo) - Fits Subaru 06-14 WRX / 04-21 STI subaru-baja-turbo-2006 Main Tubing Diameter: 3"The ellipse barrel shape profile was chosen from the advanced analysis of the analysis distribution of piston temperatures, material properties, and the coefficient thermal expansion rates. This allowed our design to use much tighter piston clearances for maximum power range. This greatly reduces blow by gases, friction loss, and no noise. This maximizes the power and longevity of the piston. This is the advantage of Tomei's Pistons. DETAILS: Low