GiroDisc Porsche 911 GT3/GT3RS/GT2RS (991 Excl PCCB) Slotted Rear Rotors

SKU: A2-146

GiroDisc Porsche 911 GT3/GT3RS/GT2RS (991 Excl PCCB) Slotted Rear Rotors

GiroDisc slotted rear rotors deliver direct replacement braking for 2014-2019 Porsche 911 GT3 GT3RS and GT2RS models on 991 chassis excluding PCCB. These 2-piece rotors pair a 6061-T6 aluminum hat with a high-carbon slotted iron ring to reduce unsprung weight by 3.8 lbs per rotor compared to OEM steel. Drivers gain better heat management fade resistance and track-ready stopping power.

Key Features

• Two-Piece Design: Aluminum hat secured to slotted iron friction ring with aircraft-grade titanium fasteners allows ring replacement and cuts rotational mass for sharper handling.
• Slotted Friction Surface: Precision slots channel heat gases and debris away from pads for consistent bite even under high-speed track abuse.
• Weight Reduction: Each rotor weighs 8.4 lbs (16.8 lbs pair) versus OEM 12.2 lbs (24.4 lbs pair) lowering unsprung weight for quicker suspension response.
• High-Carbon Iron Ring: Resists warping and cracking at elevated temperatures while providing strong initial bite and modulation.
• Direct Bolt-On Fit: Matches OEM 330mm x 30mm dimensions and hub mounting pattern for plug-and-play installation on 991 GT models.

Product Notes

• Designed for steel brake equipped vehicles only excludes PCCB ceramic systems.
• Rotor rings are replaceable extending service life beyond stock components.
• Ships as a pair in protective wooden crate to prevent shipping damage.

Installation Notes

• Professional installation recommended.
• Torque fasteners to GiroDisc specs using anti-seize on threads.
• Compatible with OEM calipers pads and hardware no modifications required.

This Part Fits

Year	Make	Model	Submodel
2014	Porsche	911	GT3
2015	Porsche	911	GT3
2016	Porsche	911	GT3
2016	Porsche	911	GT3 RS
2016	Porsche	911	GT2 RS
2017	Porsche	911	GT3
2018	Porsche	911	GT2 RS
2019	Porsche	911	GT3
2019	Porsche	911	GT3 RS

Why Choose GiroDisc?

• Developed for endurance racing with proven results in GT3-class events.
• Hand-built in USA with tight tolerances for perfect balance and longevity.
• Aluminum hats carry structural warranty against cracking.

Frequently Asked Questions

• Q: Does this fit Porsche 991 GT3 models with PCCB brakes?
  A: No these rotors fit only steel brake equipped 991 GT3 GT3RS GT2RS. PCCB cars require dedicated ceramic rotors.
• Q: What material makes up the rotor ring?
  A: High-carbon ductile iron formulated for heat resistance and smooth pad wear with slots for cooling and cleaning.
• Q: What warranty covers these rotors?
  A: Aluminum hats warranted for life against defects. Friction rings covered for 12 months or 12k miles.

Shipping & Handling

• Method: UPS Ground or freight for special order items
• Availability: In stock – ships same or next business day
• Packaging: Protective wooden crate 34 x 18 x 12 inches
• Weight: 40 lbs shipping weight