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$2,799.95
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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 our 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.
Each kit is application-specific, pairing our forged aluminum calipers with the correct rotor and bracket configuration for your setup. Calipers are available in your choice of Red or Gunmetal Gray anodized finishes, both designed to withstand heat and resist corrosion while delivering a clean, motorsports-ready look. From street builds to track cars, this is the braking confidence your Subaru deserves.
Features and Benefits
Forged 6061-T6 Aluminum Caliper Body – 2-piece design, hard anodized for strength and corrosion resistance
Dual Piston Setup – 44mm primary and 41mm secondary pistons provide even pad pressure and reduced taper
Heat-Managed Pistons – Type 3 hard anodized and vented for superior thermal performance
Lightweight Design – Approximately 9.9 lbs per corner with bracket and hardware
Pad Compatibility – FMSI D1001 or D968 (varies by application)
Rotor Compatibility – Works with commonly available Subaru OEM and STI rotors
No Brake Lines Required – Compatible with factory lines (new lines may be recommended depending on vehicle)
Included Components
(2) GrimmSpeed 4-Piston Brake Calipers (choose Red or Gunmetal)
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| SKU:
GRM.1173.1.RED
