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GiroDisc  |  SKU: girA1-185

GiroDisc Subaru WRX STI 2018+ Slotted Rotors

Regular price $ 995.00
Shipping calculated at checkout.
Type

Short Description

Upgrade your 2018+ Subaru WRX STI braking system with GiroDisc 2-piece floating rotors and replacement rings. Lightweight, high-performance cast iron rotors paired with CNC-machined aluminum hats deliver improved cooling, reduced weight, and precise, quiet operation. Direct OEM fit, easy installation, and reusable hats make this an ideal upgrade or service solution.

Pickup available at SHOP HQ

Usually ready in 5+ days

Delivery and Shipping

Domestic orders for in-stock items typically arrive within 5-10 business days, while international orders for in-stock items may take 12–15 business days.

If an item is out of stock or back-ordered, we will contact you within 3–5 business days with an estimated time of arrival (ETA) or alternative options before the order is fulfilled.

Price Match Guarantee

We strive to offer competitive pricing and will price match qualifying competitors under certain conditions. Learn more here

Description

Take your 2018+ Subaru WRX STI’s braking performance to the next level with GiroDisc’s premium 2-piece floating rotors and replacement rings. Designed as direct OEM replacements, these rotors require no modifications and retain full compatibility with factory calipers, brake bias, and ABS systems.

Each rotor combines a proprietary high-carbon cast iron ring with a CNC-machined 6061-T6 aluminum hat, both proudly made and assembled in the USA. The rotors feature 48 curved vanes that act as a centrifugal pump, maximizing airflow to keep brake temperatures low during spirited street driving or track sessions.

The floating mount system uses cadmium-plated alloy steel drive pins and anti-noise spring washers, ensuring precise alignment, quiet operation, and reliable thermal expansion management. When the rings wear, simply replace them without changing the aluminum hats, saving time and money.

Choose from front rotors, rear rotors, or replacement ring kits designed specifically for your 2018+ Subaru WRX STI. All components come with the necessary hardware and are engineered for consistent performance, durability, and enhanced braking response.

Specifications

Vehicle Fitment: Subaru WRX STI (2018+)

Warranty: Limited manufacturer warranty

Origin: Made in the USA

Front Rotors (SKU: A1-185)
Rotor Diameter: 350mm
Approximate Weight: 21 lbs each (vs. 24.6 lbs stock)
Construction: 2-piece floating rotor design
Hat Material: CNC-machined 6061-T6 aluminum, anodized for corrosion resistance
Ring Material: Proprietary high-carbon cast iron
Cooling Design: 48 curved directional vanes for centrifugal cooling
Mount System: Floating mount with 10 cadmium-plated alloy steel drive pins, grade 12 cap screws, and anti-noise spring washers
Hardware Included: Yes
Sold As: Pair (left and right)

Rear Rotors (SKU: A2-185)
Rotor Diameter: 330mm
Approximate Weight: 8.8 lbs each (vs. 10.7 lbs stock)
Construction: 2-piece floating rotor design
Hat Material: CNC-machined 6061-T6 aluminum, anodized for corrosion resistance
Ring Material: Proprietary high-carbon cast iron
Cooling Design: Curved vanes for efficient heat dissipation
Mount System: Floating mount with cadmium-plated alloy steel drive pins and anti-noise spring washers
Hardware Included: Yes
Sold As: Pair (left and right)

Front Replacement Rings (SKU: D1-185)
Rotor Diameter: 350mm
Construction: High-carbon cast iron replacement rings
Hardware Included: Yes
Sold As: Pair (left and right)
Compatibility: Designed to fit existing GiroDisc 2-piece front rotor hats only
Note: Not compatible with OEM or other aftermarket 2-piece rotor systems

Rear Replacement Rings (SKU: D2-185)
Rotor Diameter: 330mm
Construction: High-carbon cast iron replacement rings
Hardware Included: Yes
Sold As: Pair (left and right)
Compatibility: Designed to fit existing GiroDisc 2-piece rear rotor hats only
Note: Not compatible with OEM or other aftermarket 2-piece rotor systems

Important Notice
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