SKU: D1-154
GiroDisc Porsche 911 Carrera (991.2) 2017-2019 (Iron Rotor Pad Shape) Slotted Front Rings
GiroDisc slotted front rings deliver direct replacement braking performance for 2017-2019 Porsche 911 Carrera 991.2 models with iron pad shape. These high-carbon steel rings pair with aluminum hats to shed unsprung weight while maintaining rigidity under high heat. Drivers experience shorter stopping distances and reduced fade during spirited driving or track sessions.
Key Features
- Slotted Surface: Narrow slots enhance initial bite clear debris and gases for consistent pedal feel lap after lap
- Curved Vane Design: Directs cooling air through the rotor vanes to pull heat away from the friction surface faster than solid rotors
- High-Carbon Alloy Steel: Resists warping and cracking under extreme thermal loads common in performance driving
- Weight Reduction: Each ring weighs 19.6 lbs versus OEM 25.6 lbs cutting over 12 lbs total unsprung mass per axle
- 350x34mm Dimensions: Matches factory specs for plug-and-play fit with iron pad compounds on Carrera brakes
Product Notes
- Rings sold as pair. Compatible with GiroDisc hats or OEM hats with minor modification
- Bed-in process required: 10-15 hard stops from 60-10 mph then autox sessions for optimal performance
- Store in dry environment to prevent corrosion on unused rings
Installation Notes
- Professional installation recommended.
- Torque caliper bolts to 25 ft-lbs and hub bolts to 110 ft-lbs per Porsche specs
- Uses OEM hardware and pads. No ABS or traction control recalibration needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2019 | Porsche | 911 | Carrera |
| 2017-2019 | Porsche | 911 | Carrera S |
| 2017-2019 | Porsche | 911 | Carrera 4 |
| 2017-2019 | Porsche | 911 | Carrera 4S |
Why Choose GiroDisc?
- Proven in IMSA and club racing with Porsche teams worldwide
- Hand-finished in USA with tight tolerances for zero runout
- Engineered for 991.2 platform after extensive dyno and track testing
Frequently Asked Questions
-
Q: Will these fit 991.2 GT3 models?
A: No these rings match iron pad shape on Carrera models. GT3 uses different pad shape and calipers -
Q: What material are the rings made from?
A: 72 Series high-carbon ductile iron for strength and heat resistance beyond OEM specs -
Q: What warranty applies?
A: Limited lifetime against defects when installed by certified shop and bedded correctly
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Pair boxed in protective foam-lined carton 24x16x12 inches
- Weight: 45 lbs
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