Mahle PowerPak 100mm Bore Piston and Ring Kit Subaru WRX / STI EJ25 2004-2021 Vehicle Make_Saab factory head bolts can become

factory head bolts can become a weak point

The new XT-R line of turbos from them consist of a billet compressor wheel to optimize the aerodynamics of a turbo and increase compressor flow within the same inducer geometry

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The Ducting Problem—Solved Properly

HKS Fuel Pump’s distinguished flow characteristics enable a stable fuel pressure and fuel supply to tuned vehicles

Mahle PowerPak 100mm Bore Piston and Ring Kit Subaru WRX / STI EJ25 2004-2021 Vehicle Make_Saab factory head bolts can becomePart #: 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