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GrimmSpeed GRM.1171.1.GRY is a gunmetal-gray four-piston fixed front brake caliper kit for specified Subaru BRZ, Scion FR-S, Toyota 86, and Toyota GR86 applications using 326 mm rotors. Forged 6061-T6 aluminum calipers and application-specific steel brackets provide balanced clamping and improved heat management. Confirm rotor size, hub, wheel clearance, brake lines, pad shape, and exact part number before ordering.
Key Features
- Forged 6061-T6 aluminum four-piston calipers
- Gunmetal-gray hard-anodized finish
- 44 mm primary and 41 mm secondary pistons
- Designed for 326 mm front rotors
- FMSI D1001 or F50 pad compatibility for this application
- Works with factory brake lines when service condition and routing are acceptable
Fitment
Fits 2013-2025 Subaru BRZ, 2013-2016 Scion FR-S, 2017-2020 Toyota 86, and 2022-2025 Toyota GR86 applications configured for the specified 326 mm rotor package. Confirm front rotor size, hub and knuckle, brake-line condition, pad selection, wheel barrel clearance, and manufacturer template before installation.
Specifications
| Brand | GrimmSpeed |
|---|---|
| Manufacturer Part Number | GRM.1171.1.GRY |
| Position | Front |
| Caliper Type | Four-piston fixed |
| Caliper Material | Forged 6061-T6 aluminum |
| Finish | Gunmetal gray |
| Rotor Diameter | 326 mm |
| Pad Shape | FMSI D1001 or F50 |
| Approximate Corner Weight | 9.9 pounds with bracket and hardware |
What's Included
Two GrimmSpeed four-piston calipers, two vehicle-specific 4140 steel mounting brackets, bridge bolts, banjo bolts, crush washers, bleeder caps, guide pins, cotter pins, spring bridges, and the supplied installation hardware. Rotors, pads, and brake lines are not included unless the current manufacturer package explicitly states otherwise.
About GrimmSpeed
GrimmSpeed manufactures automotive performance and replacement components. Match the exact manufacturer part number and published application details before installation.
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Frequently Asked Questions
Does this kit include 326 mm rotors?
The manufacturer package centers on compatibility with 326 mm rotors. Confirm the current packing list because the caliper-kit contents can be sold separately from rotors and pads.
Will the factory brake lines work?
GrimmSpeed states the kit can work with factory lines, but inspect line condition, routing, fitting type, and service requirements before installation.
What wheel clearance is required?
Use GrimmSpeed's current printable clearance template and verify the exact wheel barrel and spoke clearance before ordering.
Installation Instructions
Installation should be completed by a qualified technician using the current manufacturer instructions. Verify the vehicle or system application, inspect every supplied component, follow the specified fastener and torque procedures, check clearances and routing, and confirm safe operation before driving.
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