2018–2021 Subaru WRX STI (VA, Front, 2.5L H4, AWD)
Features
Direct replacement for OEM rotors with no modifications required
Two-piece slotted design for improved heat dissipation and performance
Approximately 4 lbs lighter per rotor compared to stock units
Maintains OEM brake bias and ABS efficiency
Constructed with U.S.-sourced 6061-T6 aircraft specification aluminum center hats
Proprietary cast iron rotors machined in-house at GiroDisc
Curved vane design developed in racing to force cooling air through the disc
Utilizes high-strength alloy steel drive pins for secure mounting
Specifications
Front rotor size: 350 mm x 30 mm
Material: Cast iron rotor with 6061-T6 aluminum hat
Weight: Approximately 16.5 lbs per rotor
Compatibility: OEM calipers, AWD drivetrain
Rotor style: Slotted
Rotor treatment: Non-cryo treated
Rotor coating: Non-coated
Mounting: Floating rotor system with high-strength alloy steel drive pins
Included Components
1x Front Left GiroDisc A1-185 Rotor
1x Front Right GiroDisc A1-185 Rotor
2x Sets of Mounting Hardware
Product Description
The GiroDisc A1-185 Slotted 2-Piece Rotor Set is designed as a direct replacement for the OEM front rotors on the 2018–2021 Subaru WRX STI (VA). These rotors are engineered to bolt directly to the vehicle without any modifications, ensuring compatibility with the factory brake system.
Constructed with a two-piece design, the A1-185 rotors feature a cast iron braking surface paired with a lightweight 6061-T6 aluminum center hat. This configuration reduces unsprung weight by approximately 4 lbs per rotor compared to stock units, enhancing acceleration and suspension response. The slotted design improves heat dissipation and reduces brake fade, making them suitable for both street and track use.
Installation is straightforward, utilizing the existing OEM calipers and hardware. The floating rotor system, secured with high-strength alloy steel drive pins, allows for thermal expansion while maintaining rotor alignment. This setup ensures consistent braking performance under demanding conditions.
Please note that these rotors are not compatible with the Carbon Ceramic Matrix (CCM) brake systems. For vehicles equipped with CCM brakes, alternative rotor options are required.
*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.
· · · SHIPPING · · ·
Free shipping across the contiguous 48 United States (excludes Hawaii and Alaska). Item(s) ships on the same day or within 1 business day. Delivery time is within 2 to 4 business days excluding next day deliveries. Orders over $750 require signature for delivery.
Canada customers - If eBay does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.
· · · RETURNS · · ·
Your complete shopping satisfaction is our #1 priority. If an item you ordered from us does not meet your expectations, please contact us within 30 days of receiving the item(s). If your order arrives damaged from shipping please contact us and we will provide a prepaid return label to send back for a replacement or refund.
Returned items must be in the original packaging (including plastic wrapped items) and in brand new condition.
Any returns received installed, mounted, used or missing components will be subject to return fee's.
· · · PAYMENTS · · ·
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PayPal, and all major credit cards/debit cards are accepted.
· · · FEEDBACK · · ·
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· · · CONTACT US · · ·
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