Girodisc Ford S550 Mustang Rear Rotors
The Girodisc A2-067 Rear Rotors are a direct replacement for the factory rotors on the Ford S550 Mustang, engineered for performance enthusiasts who demand precision braking, reduced weight, and long-term serviceability. These 2-piece floating assemblies maintain the OEM fit and brake bias while providing measurable improvements in cooling and responsiveness.
Lightweight Performance & Heat Management
Each rotor features a 6061-T6 aluminum hat mated to a high-carbon cast iron rotor ring. This construction reduces unsprung and rotational mass, improving suspension response and acceleration. The 48 curved directional vanes act as a centrifugal pump, pulling cool air through the hub to dissipate heat and prevent fade during extended track sessions or spirited driving.
Race-Ready Floating Design
The Girodisc floating mount system connects the rotor ring to the aluminum hat via cadmium-plated steel drive pins secured with Belleville washers and spring clips. This setup allows the ring to expand under high heat without distortion, maintaining consistent pedal feel and preventing vibration or noise. The result is a rotor that performs flawlessly on both the street and track.
Vehicle Fitment
- Ford Mustang S550 (2015+ models with performance package)
- Direct rear rotor replacement; compatible with OEM calipers and hardware
Technical Specifications
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Part Number: A2-067
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Position: Rear
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Material: High-carbon cast iron rotor ring with 6061-T6 aluminum hat
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Vane Design: 48 curved directional vanes
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Minimum Thickness: 23 mm
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Rebuildable: Yes — replace rotor rings, reuse hats and hardware
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Sold/Price: Per pair
FAQs
Are these rotors a direct fit? Yes, the Girodisc A2-067 bolts directly to the S550 Mustang hub and uses the factory calipers and pads.
What benefits do 2-piece rotors provide? They reduce rotational weight, improve cooling, and allow ring replacement for long-term cost savings.
Can I use these on the street? Absolutely. Girodisc rotors are quiet and durable for street use, yet fully capable of handling aggressive track driving.
When should I replace the rings? Replace them when they reach the 23 mm minimum thickness or if a crack extends to the rotor edge.
Enhance your Ford S550 Mustang’s braking performance with Girodisc’s lightweight, rebuildable rear rotors — engineered for precision, durability, and confidence on every lap.
