Mahle PowerPak 99.75mm Bore 79mm Stroke Piston and Ring Kit Subaru WRX / STI EJ25 2004-2021 vendor_Walbro While sold in singles

While sold in singles

NOTE: Each size is available in custom cut lengths up to 300 ft

- Black anodized

(1) Aluminum Fan Shroud

150% increase in torque capacity

Mahle PowerPak 99.75mm Bore 79mm Stroke Piston and Ring Kit Subaru WRX / STI EJ25 2004-2021 vendor_Walbro While sold in singlesPart #: 930285027 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