Mercedes S63/65, CL63/65 Front Rotors (Girodisc A1-170)
The Girodisc Front Rotor set for Mercedes S63/65 and CL63/65 offers a high-performance, lightweight upgrade that installs directly in place of the factory rotors. With a focus on reduced unsprung mass and improved cooling, these rotors enhance braking consistency and response without altering factory brake bias or requiring modifications to the calipers.
Vehicle Fitment
This Girodisc front rotor set fits the following Mercedes-Benz AMG models:
- Mercedes-Benz S63 AMG (W221, W222)
- Mercedes-Benz S65 AMG (W221, W222)
- Mercedes-Benz CL63 AMG (C216)
- Mercedes-Benz CL65 AMG (C216)
Compatible with factory calipers and ABS systems. Designed as a direct replacement for OEM iron or carbon-ceramic front rotors.
Precision-Machined Two-Piece Design
The central hat section is made from U.S.-sourced 6061-T6 aircraft-grade aluminum for maximum strength and minimum weight. The disc is Girodisc’s proprietary cast iron, poured and machined in the USA. Curved internal vanes act as a centrifugal pump, forcing air through the rotor for optimal heat dissipation during high-load braking.
Features
- Direct replacement for OEM front discs; no modifications required.
- Two-piece floating construction significantly reduces unsprung and rotational weight.
- Proprietary cast iron rings with 6061-T6 aluminum hats for high thermal stability and rigidity.
- Curved vane design maximizes cooling airflow and reduces fade under track or heavy street use.
- Floating mount system with 12 high-strength alloy steel drive pins allows precise axial and radial float.
- Anti-noise spring washers minimize rattle while maintaining the full floating function under heat expansion.
- Cadmium-plated hardware and class 12.9 cap screws ensure long-term corrosion resistance and reliability.
- Designed, cast, and machined in the USA to exacting motorsport standards.
Specifications
Rotor Type: Two-piece floating
Material: Proprietary cast iron with 6061-T6 aluminum hat
Hardware: 12 alloy steel drive pins with spring washers
Fitment: Mercedes-Benz S63, S65, CL63, CL65 AMG models
Installation: Direct bolt-on with OEM calipers
Sold as: Pair (left and right front rotors)
FAQs: Mercedes S63/65, CL63/65 Front Rotors (Girodisc)
Do these rotors require any modification to the braking system? No, they are direct bolt-on replacements for the OEM front rotors and retain full compatibility with the factory calipers and ABS system.
Are these rotors quieter than typical floating race rotors? Yes. The spring washer hardware minimizes rattle and vibration during normal street use while still allowing for thermal expansion during heavy braking.
What benefits will I notice over the stock rotors? You’ll experience sharper brake response, improved cooling, and a noticeable reduction in rotating and unsprung mass.
Can I service these rotors? Yes. When the iron rings wear out, they can be replaced independently of the aluminum hats and hardware, keeping maintenance costs lower.
Ordering Information
Sold and priced per pair. Includes left and right Girodisc front rotors for Mercedes S63/65 and CL63/65 AMG models.
