GSC EJ WRX/STi Conical High Pressure Valve Spring Kit (5073) Clutch Masters * Fits with a 6-bolt

* Fits with a 6-bolt block only

this radiator is the ideal upgrade from your stock Evolution radiator

50" 13221 2

Includes a full set of 7 bolts with assembly lube

GSC EJ WRX/STi Conical High Pressure Valve Spring Kit (5073) Clutch Masters * Fits with a 6-boltGSC Power Division high pressure conical valve spring kit for the EJ WRX and STi includes 16 titanium retainers, 16 conical valve springs and 16 chromoly valve spring seats. High RPM and high boost levels are not a problem on these kits. Vehicle Fitment: EJ20 EJ25 2002 2014 Subaru WRX 2004 2021 Subaru STi 109lbs @ 1. 303" install height 259lbs @ 0. 850" Includes: (16) Titanium Retainers (16) Conical HP Valve Springs (16) Chromoly Valve Spring Seats