SKU: D2-146
GiroDisc Porsche 911 GT3/GT3RS/GT2RS (991 Excl PCCB) Slotted Rear Rings 2014-2019
GiroDisc slotted rear rotor rings deliver direct replacement braking for Porsche 911 GT3 GT3RS and GT2RS models in the 991 chassis excluding PCCB systems. These 350mm x 24mm two-piece rotors use curved vane technology to pull air through for consistent cooling during hard driving. Drivers gain reliable stopping power with less unsprung weight and resistance to warping.
Key Features
- Two-Piece Construction: Aluminum 6061-T6 hats separate from iron rings to allow growth under heat preventing cracks common in one-piece designs
- Slotted Surface: Narrow slots clear gases and debris while directing cooling air to pads for reduced fade on track days
- Curved Vane Design: Internal fins channel maximum airflow through the rotor vanes boosting heat dissipation by 25 percent over straight vane rotors
- Stainless Drive Buttons: Floating bobbin system retains rotors securely during high lateral G loads without galling
- Precision Balanced: Assembled and balanced to 0.05g tolerances for vibration-free operation at all speeds
Product Notes
- Not compatible with vehicles equipped with PCCB ceramic brakes
- Bed-in process required using GiroDisc recommended procedure for optimal performance
- Packaged in protective foam-lined box dimensions 20 x 20 x 6 inches
Installation Notes
- Professional installation recommended.
- Reuse OEM hats or purchase GiroDisc hats separately for full assembly
- Compatible with OEM calipers hardware and pads no modifications needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2014-2016 | Porsche | 911 | GT3 |
| 2017-2019 | Porsche | 911 | GT3 |
| 2016-2019 | Porsche | 911 | GT3 RS |
| 2016-2018 | Porsche | 911 | GT2 RS |
Why Choose GiroDisc?
- Proven in endurance racing including Porsche Cup series
- High-carbon iron rings resist heat checking longer than OEM
- CNC machined in USA for exact fit and balance
Frequently Asked Questions
- Q: Will this fit my 991 GT3 with standard steel brakes?
A: Yes D2-146 fits all 991 GT3 GT3RS GT2RS with iron rotors excluding PCCB ceramic systems across 2014-2019 years - Q: What material are the rotor rings?
A: High-carbon 72 series ductile iron with 350mm diameter 24mm thickness slotted finish for durability and bite - Q: What warranty applies?
A: 12-month unlimited mileage warranty against defects when installed by certified technician and bedded correctly
Shipping & Handling
- Method: UPS Ground or LTL for special orders
- Availability: Special order ships within 3-5 business days
- Packaging: Foam-lined box 20 x 20 x 6 inches
- Weight: 22 lbs shipping weight pair
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