612001C-4 Manley Pistons EJ257 for 06-14 WRX / 04+ STi ZEX transfer gearbox and hypoïd differentials

transfer gearbox and hypoïd differentials without limited slip system operating under shocks

Treatment: Nitride

What's the difference between Journal Bearing and Ball Bearing

• Machined aluminum Radium Engineering Air/Oil Separator

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

612001C-4 Manley Pistons EJ257 for 06-14 WRX / 04+ STi ZEX transfer gearbox and hypoïd differentialsManley 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