632005CE-4 Manley Turbo Tuff Pistons EJ257 for 06-14 WRX / 04+ STi SpoolinUp the 3-port design often significantly

the 3-port design often significantly improves spool

Available with the SP

(1) STM Coupler 4" to 5" (STM-RC-400/500)

pair this EcoBoost exhaust with the Mishimoto EcoBoost Downpipe

632005CE-4 Manley Turbo Tuff Pistons EJ257 for 06-14 WRX / 04+ STi SpoolinUp the 3-port design often significantlyManley 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: 632005CE4 Pin: Extreme . 250" Wall Bore Size: 100mm (+. 5) Rod Length: 5. 137" Stroke: 75mm De Stroked (2. 35L) Comp Distance: 1. 285" Dome Volume: 18 cc Cylinder Head