SKU: A1-185
GiroDisc 2018-2021 Subaru WRX STI Slotted Front Rotors
GiroDisc slotted front rotors feature a 2-piece design for the 2018-2021 Subaru WRX STI providing substantial weight reduction and enhanced braking. These rotors replace OEM parts directly improving heat management during spirited driving or track use. Drivers experience shorter stopping distances and resistance to fade thanks to the slotted surface and high-quality materials.
Key Features
- 2-Piece Floating Design: Combines 6061-T6 aircraft-grade billet aluminum hats with high-carbon slotted rotors reducing unsprung weight by over 30% compared to stock for better handling and suspension response.
- Slotted Rotor Surface: Channels gases and debris away from the pad interface while promoting even heat distribution to prevent brake fade during repeated hard stops.
- 356mm x 30mm Dimensions: Matches exact OEM specifications for 2018-2021 WRX STI ensuring seamless fitment with stock calipers and pads.
- Hard Anodized Hats: Resists corrosion and galling for long-term durability in harsh conditions including road salt and track environments.
- Weight Per Pair: 38.8 lbs versus OEM 56.4 lbs delivering noticeable improvements in acceleration rotational inertia and overall vehicle dynamics.
Product Notes
- Sold as a pair for left and right front installation.
- Requires proper bedding-in procedure for optimal performance and longevity.
- Box dimensions 20 x 20 x 12 inches shipping weight 42 lbs.
Installation Notes
- Professional installation recommended.
- Bolt-on replacement using existing OEM hardware and caliper setup.
- Compatible with factory brake pads and lines no modifications needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2018-2021 | Subaru | WRX STI | All |
Why Choose GiroDisc?
- Proven in professional motorsports and street applications worldwide.
- Manufactured with precision CAD engineering for perfect balance and fit.
- Backed by lifetime warranty on hats and 12 months on rotors.
Frequently Asked Questions
- Q: Will these rotors fit my 2018-2021 Subaru WRX STI with stock brakes?
A: Yes these are direct replacements for all 2018-2021 WRX STI models using OEM 356mm front rotors and calipers. - Q: What material are the rotors made from?
A: High-carbon steel rotors paired with hard-anodized 6061-T6 aluminum hats for strength corrosion resistance and weight reduction. - Q: What is the warranty coverage?
A: Lifetime warranty against hat warping plus 12 months on rotors when installed and maintained properly.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed pair 20 x 20 x 12 inches
- Weight: 42 lbs
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