GiroDisc Rear Rotor Set – Ford Mustang S650 4-Piston Brembo

Upgrade the rear braking performance of your Ford Mustang S650 with the GiroDisc Rear Rotor Set — a premium two-piece floating rotor upgrade designed for vehicles equipped with the 355mm 4-piston Brembo iron rear brake package.

These rotors are a direct replacement for the factory rear rotors and are designed to reduce unsprung weight and rotating mass while improving heat management and braking consistency under hard use.

Designed for the Mustang S650 4-Piston Brembo Package

This GiroDisc rear rotor set is designed for Ford S650 Mustang models fitted with the 355mm 4-piston Brembo iron rear brakes.

Suitable applications include selected Mustang GT Performance Package, Dark Horse and Dark Horse SC models without the optional carbon ceramic brake package.

Two-Piece Floating Rotor Design

GiroDisc rotors use a two-piece floating design with a reusable aluminium hat and replaceable high-carbon iron rotor ring.

This design allows the rotor ring to expand and contract more effectively under heat while reducing unnecessary weight at the rear axle. When the rotor rings wear out, the hats can be reused with GiroDisc replacement rings rather than replacing the entire rotor assembly.

Key Features

• GiroDisc rear rotor set
• Part number: A2-343
• Suits Ford Mustang S650 with 355mm 4-piston Brembo iron rear brakes
• Two-piece fully floating rotor assembly
• Direct replacement for the factory rear rotors
• Designed to reduce unsprung weight and rotating mass
• High-carbon iron rotor rings
• Curved vane design for improved cooling
• Reusable 6061-T6 aluminium hats
• Black anodised hat finish
• High-strength steel drive pins
• Spring clips and spring washers for race-ready float with street-friendly operation
• Replacement rotor rings available separately
• Professional installation recommended

Technical Data

Outer Diameter: 355mm
Thickness: 28mm
Minimum Thickness: 26mm
Weight: 18.4lb per rotor assembly
Vane Count: 48 curved vanes
Replacement Rings: D2-343

Fitment

Vehicle: Ford Mustang
Generation: S650
Brake Package: 355mm 4-piston Brembo iron rear brakes
Product: GiroDisc Rear Rotor Set
Part Number: A2-343
Replacement Ring Part Number: D2-343

Suitable for selected:

• Ford Mustang S650 GT with Performance Package
• Ford Mustang S650 Dark Horse
• Ford Mustang S650 Dark Horse SC

Does not suit vehicles equipped with the optional carbon ceramic brake package.

Final fitment must be confirmed before ordering using the vehicle year, model, brake package, rotor size and VIN where required.

Important Notes

• This listing is for the rear rotor set.
• Designed for S650 Mustang models with 355mm 4-piston Brembo iron rear brakes.
• Not suitable for carbon ceramic brake-equipped vehicles.
• Brake pads are not included unless stated separately.
• Replacement rings should be fitted when rotors reach minimum thickness or if cracking reaches the edge of the ring.
• Professional installation is recommended.
• Final compatibility must be confirmed before ordering.
• Product images may be generic and used for illustration purposes only.
• Available through Euroflow.

Why Choose GiroDisc?

GiroDisc is known for premium two-piece braking components designed for high-performance street and track vehicles.

For Mustang S650 owners wanting better heat management, reduced rotating mass and long-term serviceability, the A2-343 rear rotor set is a serious braking upgrade over a conventional one-piece rotor setup