Paragon 2-piece Rotors Rear Pair 312mm x 18mm (12.28" x 0.71") - Toyota GR Yaris / GR Corolla
Paragon 2-piece Rotors Rear Pair 312mm x 18mm (12.28" x 0.71") - Toyota GR Yaris / GR Corolla - Mil-Spec Black Hard Coat Anodizing is backordered and will ship as soon as it is back in stock.
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Paragon 312x18mm rear two-piece rotors are supplied as a pair for Toyota GR Corolla. Match the installed brake package and rotor dimensions before choosing a hat finish.
Rotor specifications and fitment
| Vehicle application | Toyota GR Corolla |
|---|---|
| Axle / quantity | Rear / two rotor assemblies |
| Rotor diameter × thickness | 312x18mm |
| Required brake system | Factory rear calipers with the supplied stainless steel caliper spacers; OEM dust-shield modification required |
| Rotor construction | Fixed-hat, non-floating two-piece construction |
| Rotor ring material | CM-250 high-carbon alloy cast iron |
| Hat material | 6061-T6 aluminum |
Design and serviceability
The iron friction ring and aluminum hat separate the rotor’s braking surface from its mounting section. CM-250 iron is heat treated and surface machined, while the aluminum hat provides a lightweight mounting structure. The slotted face helps maintain a clean pad contact surface during braking.
This application uses a fixed-hat, non-floating mounting arrangement. Two-piece construction does not mean every rotor uses a floating connection; match replacement parts and assembly hardware to this specific design.
Brake-package requirements
Factory rear calipers with the supplied stainless steel caliper spacers; OEM dust-shield modification required.
Hat finish and installation
Available hat finish: Mil-Spec Black Hard Coat Anodizing; Mil-Spec Hard Coat Anodizing. Paragon recommends the undyed hard-anodized finish for heavy track use because dyed black hats can discolor under high heat. Choose for your use case, then follow the Paragon general rotor installation and bedding guide (PDF).
What is included
Two assembled rotor units for the listed axle, stainless steel caliper spacers and access to the Paragon general rotor installation and bedding guide (PDF).
Product FAQs
Are these 312x18mm rotors for the front or rear?
This listing is for the rear axle and includes two rotor assemblies for Toyota GR Corolla.
Which brake system do they fit?
Factory rear calipers with the supplied stainless steel caliper spacers; OEM dust-shield modification required. Match the installed hardware, not just the vehicle model.
Is this a complete brake kit?
No. This listing supplies a rotor pair. The stainless steel caliper spacers are included; calipers and brake pads are not included.
Which hat finish suits track use?
Paragon recommends undyed hard anodizing for high-heat track use. Dyed black hardcoat hats can discolor at high temperatures; confirm the available finish in the selector.
For fitment help, send Pit Garage your model year, chassis, installed caliper/brake package and intended road or track use. For a big brake kit, include wheel specifications. Confirm current availability and lead time before planning installation.