Perrin Master Cylinder STIFFI Subaru WRX/STI 02-07

Firm and unforgiving, the PERRIN Performance Master Cylinder Support quickly solves a long-time Subaru braking issue: flexing of the master cylinder with hard braking. Crafted from 6061 aluminum, our adjustable Master Cylinder Support bolts to the driver-side shock tower to fix the problem and deliver firmness to the pedal.