622105C-4 Manley Pistons EJ257 for 06-14 WRX / 04+ STi Hawk Performance and gradual taper from top

and gradual taper from top to bottom turbulence is eliminated

GSC Power-Division Super Alloy Exhaust Valves for 4G63T are for those running high horsepower

We offer a complete line of hard to find fittings from OEM specific connections to AN adapters

Let the Armytrix kickstart the real automotive experience

These allow your coilover springs to smoothly rotate around the perch under compression enabling spring load to be more evenly distributed easing the pre-load and reducing the noise created under spring compression

622105C-4 Manley Pistons EJ257 for 06-14 WRX / 04+ STi Hawk Performance and gradual taper from topManley 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: 622105C4 Pin: Standard . 180" Wall Bore Size: 100mm (+. 5) Rod Length: 5. 137" Stroke: 83mm Stroker (2. 7L) Comp Distance: 1. 130" Dome Volume: 14 cc Cylinder Head cc: