Mahle PowerPak 100mm Bore Piston and Ring Kit Subaru WRX / STI EJ25 2004-2021 Wheel Color_Gunmetal Increased fluid capacity and optimal

Increased fluid capacity and optimal heat dissipation

Performance data coming soon

Performance pressure plate

Put these APR Front Brake Ducts in the front of your 08+ STi and stand out from the crowd as well as direct air to either your brakes

Wheel Torque Rating ~450

Mahle PowerPak 100mm Bore Piston and Ring Kit Subaru WRX / STI EJ25 2004-2021 Wheel Color_Gunmetal Increased fluid capacity and optimalPart #: 930285037 Mahle's PowerPak piston assemblies include forged pistons, piston rings, pins, and wire locks all in one race proven package. The pistons are hand deburred and then coated with dry phosphate to protect against ring micro welding and pin galling during initial startup. For additional performance, Mahle added its proprietary Grafal anti friction coating to the piston skirts. Low drag rings, steel pins, and round wire locks complete the