632305CE-4 Manley Turbo Tuff Pistons EJ257 for 06-14 WRX / 04+ STi Quarter Master There are cross-over passages at

There are cross-over passages at the top and bottom

Low RPM response for increased top end performance

the assembly is then chemically coated with black oxide for lubricity

These vented vane carbon ceramic rotors feature a lightweight

This includes just the Radium Evo X Fuel Rail and install bolts if you're looking for a custom install

632305CE-4 Manley Turbo Tuff Pistons EJ257 for 06-14 WRX / 04+ STi Quarter Master There are cross-over passages atManley 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: 632305CE4 Pin: Extreme . 250" Wall Bore Size: 100mm (+. 5) Rod Length: 5. 137" Stroke: 79mm Standard Stroke (2. 5L) Comp Distance: 1. 209" Dome Volume: 10 cc Cylinder