612001C-4 Manley Pistons EJ257 for 06-14 WRX / 04+ STi ZEX DeatschWerks 1000cc fuel injectors for

DeatschWerks 1000cc fuel injectors for the top-feed 2004-2014 WRX and 2007+ Subaru STi

Oversized guide sizing are for the OD

Ability to change torque levels or demand levels sent to 4WD unit and TCM ECU for changing of up shift and down shift points

Treatment: Nitride

612001C-4 Manley Pistons EJ257 for 06-14 WRX / 04+ STi ZEX DeatschWerks 1000cc fuel injectors forManley 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: 612001C4 Pin: Standard . 180" Wall Bore Size: 99. 55mm (+. 05) Rod Length: 5. 137" Stroke: 79mm Standard Stroke (2. 5L) Comp Distance: 1. 209" Dome Volume: 22 cc