SKU: A2-078
GiroDisc 2015-2020 Alfa Romeo 4C Slotted Rear Rotors
GiroDisc slotted rear rotors deliver reliable braking performance for 2015-2020 Alfa Romeo 4C models including Coupe and Spider. These two-piece rotors replace OEM parts directly with a lightweight aluminum hat and high carbon iron ring for lower unsprung weight and effective heat management. Drivers experience reduced fade during spirited driving or track sessions.
Key Features
- Two-Piece Construction: Forged 6061-T6 aluminum hat bolts to 310mm x 22mm high carbon cast iron slotted ring reducing weight by 4 lbs per rotor versus stock while isolating heat from hubs.
- Slotted Friction Surface: 72 internal cooling vanes and external slots evacuate gases water and debris for improved pad bite consistent performance and minimal fade under load.
- High Carbon Alloy Ring: Resists thermal cracking and warping at temperatures exceeding 1000°F ensuring durability on street or track.
- Patented Floating Design: Retention screws allow thermal expansion without stress on mounting surfaces maintaining precise rotor-to-hat alignment.
- Direct Bolt-On Fit: Matches OEM 5×108 bolt pattern and 145mm hat OD no modifications needed uses factory calipers pads and hardware.
Product Notes
- Rotors sold as pair (LH and RH) for complete rear axle upgrade.
- Pair with GiroDisc pads for maximum performance bedding required before track use.
- Special order item expect 3-5 business day processing time.
Installation Notes
- Professional installation recommended.
- Torque hat screws to 20 ft-lbs during assembly use thread locker.
- Compatible with OEM calipers hardware and pad shims no adapters required.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2020 | Alfa Romeo | 4C | Coupe |
| 2015-2020 | Alfa Romeo | 4C Spider | All |
Why Choose GiroDisc?
- Engineered and machined in the USA with racing-proven designs used in SCCA and endurance series.
- Precise tolerances and balanced rotors minimize vibration for smooth operation.
- Focused on lightweight high-performance braking components for sports cars.
Frequently Asked Questions
- Q: Will these rotors fit my 2018 Alfa Romeo 4C Spider?
A: Yes A2-078 fits all 2015-2020 4C Coupe and Spider models as direct OEM replacement rear rotors 310x22mm size. - Q: What material is used in the rotor ring?
A: High carbon 72-vane cast iron for strength and heat resistance paired with corrosion-resistant aluminum hat. - Q: What is the warranty and bedding process?
A: Lifetime warranty against hat separation or warping when used with compatible pads follow GiroDisc bedding procedure of 10-10-10 stops for optimal performance.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: Special order ships within 3-5 business days
- Packaging: Custom protective box 16 x 16 x 8 inches
- Weight: 24 lbs
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