SKU: D1-032
GiroDisc 2001-2009 Porsche 911 Carrera S/4S (996/997) 350mm Slotted Front Rings
GiroDisc slotted front rotor rings provide direct replacement braking upgrades for Porsche 911 Carrera S and Carrera 4S models in 996 and 997 chassis. The 350mm diameter slotted design channels heat and gases for consistent pad contact during hard driving. Two-piece construction with aluminum hats reduces unsprung weight by 14 lbs per pair compared to stock rotors for sharper suspension response and handling.
Key Features
- Directionally Stress-Controlled Slots: Proprietary 48-slot pattern vents gases and resists cracking under track abuse for extended service life
- 72 Curved Internal Vanes: Maximizes airflow to cool rotors 20% faster than straight vane designs reducing fade on repeated stops
- High-Carbon Alloy Iron Rings: 350mm x 34mm dimensions match OEM specs with added ductility to handle high-heat conditions without warping
- 6061-T6 Aluminum Hats: Hard-anodized black finish prevents corrosion and weighs 6.5 lbs each versus heavier steel OEM hats
- Floating Two-Piece Assembly: Allows thermal expansion to eliminate hat-to-ring stress each ring weighs 21.3 lbs versus stock equivalent 27.5 lbs
Product Notes
- Requires GiroDisc hats and fasteners sold separately or as full assembly
- Bed-in procedure essential for optimal performance follow GiroDisc guidelines
- Pair only ships bare rings professional packaging protects edges during transit
Installation Notes
- Professional installation recommended.
- Bolt pattern 5x130mm matches Porsche OEM hubs no modifications needed
- Use anti-seize on hat hardware torque to 35 ft-lbs compatible with OEM calipers
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2004 | Porsche | 911 | Carrera S |
| 2002-2005 | Porsche | 911 | Carrera 4S |
| 2005-2008 | Porsche | 911 | Carrera S |
| 2006-2009 | Porsche | 911 | Carrera 4S |
Why Choose GiroDisc?
- Proven in Porsche Club racing and PCA events nationwide
- Machined in USA from aerospace-grade materials
- Engineered for 996/997 big brake setups with zero runout tolerance
Frequently Asked Questions
- Q: Will these fit my 997 Carrera S with standard brakes?
A: Yes direct bolt-on for factory 350mm front calipers on Carrera S/4S models no adapters required - Q: What material are the rings made from?
A: High-carbon ductile iron slotted on both sides for balanced cooling resists heat checking better than drilled rotors - Q: What is the warranty and bedding process?
A: 12-month defect warranty bed with 10 hard stops from 50-10 mph then 3 medium stops from 80 mph
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Custom foam-lined box 20 x 20 x 10 inches
- Weight: 45 lbs (pair of rings)
