4-Piston Brake Caliper Kit - 326mm Rotor for 2002-2021 Subaru WRX/STI by GrimmSpeed
The stock single-piston caliper found on most Subaru platforms gets the job done — but it wasn’t designed for the kind of aggressive driving, tracking, or build evolution most GrimmSpeed drivers pursue. That’s where Grimmspeeds 4-Piston Brake Caliper Kit comes in.
Purpose-built for Subaru performance, this fixed caliper setup brings balanced stopping power, improved heat management, and consistent pedal feel to your favorite chassis. Designed in-house and tested under real-world conditions, the system offers a true performance solution — with no need to chase down used Brembos or deal with custom brackets.
Features
- Forged 6061-T6 Aluminum Caliper Body
- Dual Piston Setup
- Heat-Managed Pistons
Benefits
- Lightweight Design
- Compatible with FMSI D1001 or D968 pads
- Works with commonly available Subaru OEM and STI rotors
