BC Brian Crower Valve Springs and Retainer Kit for EJ25 Subaru WRX STi Spring:Single Spring - Titanium Retainer Kit They feature wide aperture slots

They feature wide aperture slots that draw cool air into the braking contact and reduce the temperature to prevent brake fade

Organic Disc 224mm High HP street or race

• Length 4

Deadtime is the delay between when exhaust gas composition changes and when that change is reported by the O2 sensor

BC Brian Crower Valve Springs and Retainer Kit for EJ25 Subaru WRX STi Spring:Single Spring - Titanium Retainer Kit They feature wide aperture slotsBC Brian Crower valve spring and titanium retainer kit for the WRX and STi models with the EJ20 and EJ25 engine. Designed for high RPM, BC valve springs by PAC Racing are crafted from the highest grade, ultra clean chrome silicone alloy and undergo proprietary processing for consistent pressure. BC titanium retainers are CNC machined from 6AL4V titanium round bar to exacting tolerances. Please Note: Pictures are for reference. Vehicle Fitment: 2002