621102C-4 Manley Pistons EJ257 for 06-14 WRX / 04+ STi Garrett it can be installed onto

it can be installed onto just about any pipe shape

• The S2 cams require an upgraded valve spring

2 of these plugs are used in the stock Evo X 4B11 cylinder block

• 1/2" NPT block ports with plugs

• Straight machined aluminum bar for added rigidity

621102C-4 Manley Pistons EJ257 for 06-14 WRX / 04+ STi Garrett it can be installed ontoManley 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: 621102C4 Pin: Standard . 180" Wall Bore Size: 99. 75mm (+. 25) Rod Length: 5. 137" Stroke: 75mm De Stroked (2. 35L) Comp Distance: 1. 285" Dome Volume: 18 cc Cylinder