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Track-Bred Bite for the GR Corolla's Front Axle
The GR Corolla's factory front pads fade quickly once track laps or repeated mountain-road braking heat up the rotors. Project Mu's Type NS front pads are a direct-fit, non-steel compound built specifically for the GZEA14H chassis, giving a firmer pedal and lower dust than the OE friction material without the noise of a full race compound. Part number PSF009 is the front-only half of Project Mu's street and spirited-driving upgrade for the 2023 and newer GR Corolla.
Key Features
- Non-steel friction compound engineered for reduced brake dust and noise
- Effective friction across a 0 to 400 degree C rotor temperature range
- Friction coefficient of 0.34 to 0.43 mu for consistent street and canyon-road bite
- Direct bolt-on fit for the GR Corolla front caliper, no modification required
- Manufactured in Japan by Project Mu for the GZEA14H platform
Fitment
| Year | Make | Model | Position |
|---|---|---|---|
| 2023-2026 | Toyota | GR Corolla | Front |
Specifications
| Detail | Value |
|---|---|
| Manufacturer part number | PSF009 |
| Pad type | Type NS |
| Position | Front |
| Friction material | Non-steel |
| Applicable rotor temperature | 0 to 400 degrees C |
| Friction coefficient | 0.34 to 0.43 mu |
| Country of manufacture | Japan |
What's Included
- 1 set of front brake pads (2 pads)
About Project Mu
Project Mu is a Japanese brake manufacturer that engineers friction compounds and rotors for street, drift, and circuit use. The Type NS line is built as a direct performance step up from genuine pads, reducing dust and noise while keeping predictable street manners.
FAQ
Do these pads fit the GR Corolla rear caliper?No. PSF009 is a front-only pad set, the GR Corolla rear uses a separate part number.
Will these pads work for daily street driving?Yes. Type NS is designed as a street-focused compound with low dust and low noise compared to more aggressive track pads.
Are these pads suitable for track days?Type NS is a street and light spirited-driving compound. Drivers doing regular track sessions typically step up to Project Mu's more heat-tolerant pad lines.
Do these pads require rotor bedding before normal use?Yes. New pads should be bedded in with a series of moderate stops before hard braking.
Will these pads cause more brake dust than stock?No. The non-steel compound is formulated to run cleaner and quieter than typical semi-metallic pads.
Do the pads include mounting hardware or shims?The pad set ships as the friction pads for the front caliper, matched to the GR Corolla factory hardware.
Is a special break-in procedure needed?A standard progressive bedding procedure of moderate stops from lower speeds is recommended before hard use.
Can these pads be used with the factory front rotors?Yes. PSF009 is designed to pair with the GR Corolla factory front rotor dimensions.
Installation Instructions
- Raise and support the vehicle, then remove the front wheel.
- Unbolt the caliper and slide it off the rotor, supporting it without stressing the brake hose.
- Remove the factory pads and retaining hardware from the caliper bracket.
- Clean the caliper bracket and slider pins, then install the new Project Mu pads.
- Reinstall the caliper, torque the mounting bolts to the factory specification, and reinstall the wheel.
- Bed the new pads with a series of moderate stops before normal driving.
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