Mahle PowerPak 99.5mm Bore Piston and Ring Kit Subaru WRX / STI EJ25 2004-2021 Vehicle Model_Talon Great for cars with sensitive

Great for cars with sensitive air flow meters as it can be tuned to vent just enough air back to the inlet to prevent backfiring

Leave those little noise makers behind and upgrade to a system tunable to your Subaru without triggering that dreaded check engine light and compromising daily drivability

The Group N transmission mount is the next step up from OEM

Center-to-Center 6

Mahle PowerPak 99.5mm Bore Piston and Ring Kit Subaru WRX / STI EJ25 2004-2021 Vehicle Model_Talon Great for cars with sensitivePart #: 930285117 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