9 inch / 4 Piston Wilwood Mazda Rotary RX Front Brake Kit (fits 13" wheels)

9-Inch / 4-Piston Wilwood Front Brake Upgrade – Fits 13" Wheels

Serious stopping power in a compact package.

This Wilwood front brake upgrade is engineered to suit performance builds running 13" wheels. Featuring lightweight 4-piston forged calipers paired with 9" rotors, it delivers strong, consistent braking without compromising clearance.

Ideal for street, strip, or circuit use — a perfect match for high-performance rotary platforms where space is tight but stopping is critical.

Key Features:

Compact 9" rotor design
Forged 4-piston Wilwood calipers
Designed to clear 13" wheels
Lightweight, high-performance setup
Direct fit for Mazda RX-3 and similar conversions

Built for those who need precision braking without going oversized.

*Please note: The performance of this brake upgrade relies heavily on having the correct brake master cylinder installed - See below. Failing this, Pac Performance cannot guarantee the product will perform as intended.

*PLEASE NOTE - WHEN ORDERING YOUR BRAKE KIT, PLEASE PROVIDE THE STUB AXEL/BACKING PLATE DIMENSIONS LISTED BELOW SO THAT WE CAN ENSURE THE CORRECT KIT IS PROVIDED

FOR 1200/1300/R100 APPLICATIONS PLEASE PROVIDE INFORMATION ON - BACKING PLATE THREAD SIZE (3X M6 OR 3X M8) AS WELL AS STRUT BASE TYPE (2 BOLT OR 3 BOLT)

Due to there being many varients of GLC323 struts, there may require slight clearance mods required.

Please allow approx. 7 working days for assembly & packaging. (See product images for drawing)

Applications:

- RX2/Capella
- RX3/808
- RX4/929
- R100/1200/1300
- GLC 323 (may require slight clearance mods)

*Please note: The performance of this brake upgrade relies heavily on having the correct brake master cylinder installed - See above. Failing this, we cannot guarantee the product will perform as intended.