612205C-4 Manley Pistons EJ257 for 06-14 WRX / 04+ STi Catback The oil cooler is available

The oil cooler is available in either Sleek Silver or Stealth Black to suit your taste

The GrimmSpeed engineering and manufacturing teams are known for designing and producing products that use high quality materials

Reverse Polarity Protected

These axles feature much larger aerospace grade 36 spline bars (factory are 30 spline)

Available red or black

612205C-4 Manley Pistons EJ257 for 06-14 WRX / 04+ STi Catback The oil cooler is availableManley Pistons for the EJ257 motor in the 2006 2014 WRX and 2004+ STi models includes a full set of 4 pistons, wrist pins, ring sets and round wire locks. See more Manley Pistons for the EJ257 WRX & STi. Vehicle Fitment: Subaru EJ257 2006 2014 WRX 2004 2021 STi Piston Specs: Part Number: 612205C4 Pin: Standard . 180" Wall Bore Size: 100mm (+. 5) Rod Length: 5. 137" Stroke: 79mm Standard Stroke (2. 5L) Comp Distance: 1. 209" Dome Volume: 17 cc Cylinder