GrimmSpeed 4-Piston Brake Caliper Kit (326mm Rotor) - Gunmetal Gray - 2013-2025 Scion FR-S / Subaru BRZ / Toyota GR86

GrimmSpeed 4-Piston Brake Caliper Kit (326mm Rotor) - Gunmetal Gray - 2013-2025 Scion FR-S / Subaru BRZ / Toyota GR86

Highlights:

• 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)

Designed for Performance

The stock single-piston caliper on most Subaru models performs adequately but isn’t engineered for the aggressive driving, track days, or extensive builds that many Subaru enthusiasts pursue. The GrimmSpeed 4-Piston Brake Caliper Kit addresses this gap with a purpose-built, fixed caliper setup specifically designed for Subaru performance. It delivers balanced stopping power, enhanced heat management, and consistent pedal feel to improve braking reliability and driver confidence. Developed and tested in-house under real-world conditions, this system offers a genuine performance upgrade without the hassle of sourcing used Brembos or fabricating custom brackets.

 

Complete Application-Specific Kits

Each GrimmSpeed brake kit is tailored to fit your specific Subaru application, pairing forged aluminum calipers with the appropriate rotor and bracket assemblies. Calipers come in your choice of Red or Gunmetal Gray anodized finishes, both resistant to heat and corrosion, while delivering a clean, motorsports-inspired appearance. This kit suits a wide range of builds from street-driven vehicles to dedicated track cars, providing the braking performance and confidence that Subaru drivers deserve.

 

What’s Included

• (2) GrimmSpeed 4-Piston Brake Calipers (choose Red or Gunmetal)

• (2) Vehicle-Specific Billet 4140 Steel Caliper Brackets

• Full Hardware Kit:

  • Bridge bolts

  • Banjo bolts

  • Crush washers

  • Bleeder dust caps

  • Caliper guide pins

  • Security cotter pins

  • Caliper spring bridges + bolts

• Printable 1:1 Fitment Template

• Install Instructions

Fitment

Subaru BRZ

Toyota GR86/FRS

• Rotor Size: 326mm x 30mm - STI fitment rotor (Need 5x100 spec)
• Pad Type: "F50" or FMSI D1001 - OEM 4-Piston STI Brembo Pads
• Designed for use with OEM-style hubs and rotors — no knuckle swaps or custom adapters required

         *OEM x-ref - 5x100 - 326mm x 30mm Rotor - 2004 STI - Also came on some BRZ / 86 trims - Part No.-26300FE001