osi Quiet pads for the Subaru WRX are a great budget minded replacement because they manufactured using the same positive molding process utilized by OEM manufacturers. This process assures consistent friction material density throughout the pad, resulting in even wear and performance characteristics throughout the life of the brake pad. For the WRX, Posi Quiet pads feature precision cut backing plates and mechanically attached shims, small details that ensure proper fitment in the caliper and virtually eliminate noise associated with pad vibration.
An additional scorching process forces any impurities out of the friction material and pre-burnishes the pads to speed up the pad break-in process.
These pads fit all 2004-2005 WRX models and 2003 WRX models with the D929/D1004 caliper combination.
If you have a 2003 WRX, you need to measure the dimensions of your stock brake pads to determine which calipers you have.
Subaru WRX 2003-2005