FactionFab Titanium Rear Brake Shims | D1124 | WRX / BRZ / 86

FactionFab Titanium Rear Brake Shims, D1124

Add a thermal barrier between your rear brake pads and caliper pistons with FactionFab's 1.0 mm titanium brake shims. Designed around the FMSI D1124 pad shape, they help limit heat transfer into the caliper during demanding track and autocross use.

Specifications

• Four shims included per kit
• CP3 / Grade 2 titanium, as specified by the supplier
• 1.0 mm shim thickness
• Rear application using FMSI D1124 brake pads
• Installs between the pad backing plate and caliper piston
• Manufacturer part number: FFA1.10317.2

Fitment

Compatibility depends on the rear pad shape and caliper configuration, not model year alone. The supplier lists the following D1124 applications:

• 2013–2024 BRZ
• 2018–2024 Toyota 86 / GR86
• 2013–2017 Scion FR-S
• 2022–2024 WRX with six-speed manual transmission, without Brembo brakes

These are supplier-listed year ranges and may vary by market. Confirm your actual D1124 rear pad shape and available clearance before ordering. Do not assume compatibility with Brembo-equipped trims, performance packages, or aftermarket brake kits.

Installation and Track Use

Have a qualified brake technician verify fitment, shim clearance, and proper brake operation. These shims supplement a properly maintained braking system; they do not guarantee prevention of brake fade, fluid boiling, or brake failure. Follow the brake pad and vehicle manufacturers' service guidance.

Check the current official SCCA, NASA, or other event rules for your class before competition use. Class eligibility is not guaranteed. Front shims are sold separately.