GSC P-D Single Conical Valve Spring Titanium Retainer & Spring Seat Kit Subaru EJ WRX 2002-2014 / STI 2004-2021 vendor_Progress Technology and stepped lip

and stepped lip

If you are putting this block in a car that it was not originally designed for

This leads to a firmer pedal feel and an overall more responsive brake system

Part #: 516-790-8045ZP

GSC P-D Single Conical Valve Spring Titanium Retainer & Spring Seat Kit Subaru EJ WRX 2002-2014 / STI 2004-2021 vendor_Progress Technology and stepped lipPart #: 5073 GSC Power Division high pressure CONICAL Spring set with Titanium Retainer for the Subaru Turbo EJ Platforms 109lbs @ 1. 303" install height 259lbs @ 0. 850" The GSC Power Division High Pressure Conical Valve Spring with Ti Retainer for Subaru Turbo EJ Platforms 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. True conical valve