Vehicle Fitment

  • 2019-2026 Mercedes AMG GT 63/GT 63 S 4-Door X290
  • 2016-2021 Mercedes AMG GT S/GT C/GT R C190 (without carbon ceramic brakes)
  • 2012 Mercedes C63 AMG Black Series W204
  • 2015-2021 Mercedes C63 AMG S Sedan W205 (without carbon ceramic brakes)
  • 2007-2011 Mercedes CLS63 AMG W219 with P30 package
  • 2018-2023 Mercedes E63 AMG/E63 AMG S Sedan W213 (without carbon ceramic brakes)
  • 2018-2021 Mercedes GLC63 AMG/GLC63 AMG S (without carbon ceramic brakes)
  • 2014-2020 Mercedes S63 AMG/S65 AMG Sedan W222 (without carbon ceramic brakes)
  • 2007-2008 Mercedes SL55 AMG R230 with P30 package
  • 2009-2012 Mercedes SL63 AMG R230 with P30 package
  • 2013-2017 Mercedes SL63 AMG R231 (without carbon ceramic brakes)
  • 2005-2011 Mercedes SL65 AMG R230 with P30 package
  • 2013-2018 Mercedes SL65 AMG R231 (without carbon ceramic brakes)
  • 2011-2015 Mercedes SLS AMG (without carbon ceramic brakes; not Black Series)

Fitment Notes

  • For vehicles with factory 390mm iron front rotors
  • Not for vehicles with carbon ceramic brakes
  • R230 SL55/SL63/SL65 and W219 CLS63: P30 performance package cars only
  • W205 C63 S, W213 E63/E63 S and W222 S63/S65: sedan models only
  • AMG GT 63: 4-Door (X290) only; not for the 2-door AMG GT 63 coupe
  • W204 C63: Black Series only

Features

  • Direct replacement for OEM front rotors, no modifications required
  • 2-piece slotted design reduces unsprung weight
  • Proprietary cast iron rotor rings, poured in the USA and machined in-house by GiroDisc
  • Curved vane design improves cooling efficiency
  • U.S.-sourced 6061-T6 aircraft-specification aluminum hats
  • 12 high-strength alloy steel drive pins, cadmium-plated for corrosion resistance
  • Anti-noise spring washers stop cold rattle while allowing the rotor to float and self-center
  • Works with OEM calipers and maintains factory brake bias and ABS efficiency
  • Made in the USA

Specifications

  • Part Number: A1-123
  • Position: Front
  • Rotor Style: Slotted
  • Diameter: 390mm
  • Material: Cast iron rotor rings, 6061-T6 aluminum hats
  • Vane Design: Curved vanes
  • Drive Pins: 12 high-strength alloy steel, cadmium-plated
  • Fasteners: Class 12.9 cap screws with hardened washers
  • Quantity: Sold as a pair (Front Left & Front Right)

Included Components

  • 1x Front Left Rotor
  • 1x Front Right Rotor
  • Drive pins, cap screws, hardened washers and anti-noise spring washers (assembled)

Product Description

The GiroDisc A1-123 is a 390mm 2-piece slotted front rotor pair for Mercedes-AMG models with factory 390mm iron front rotors: C63 S (W205), AMG GT S/GT C/GT R, AMG GT 63/GT 63 S 4-Door, E63/E63 S (W213), GLC63, S63/S65 (W222), SL63/SL65 (R231), SLS AMG and the 2012 C63 AMG Black Series, plus the CLS63 (W219) and SL55/SL63/SL65 (R230) with the P30 package. It is a direct replacement for the OEM front rotors and is not for cars with carbon ceramic brakes.

The central hat is machined from U.S.-sourced 6061-T6 aluminum and the ring is GiroDisc's own cast iron, poured in the USA and machined in-house. The curved vane design acts as a centrifugal pump that forces cooling air through the disc. The hat and ring float on 12 cadmium-plated alloy steel drive pins secured by class 12.9 cap screws, with anti-noise spring washers that eliminate cold rattle while letting the rotor grow with heat and self-center between the pads.

Installation requires no modifications. The rotors bolt directly to the car and work with the OEM calipers, so factory brake bias and ABS efficiency are maintained. When the rings wear out, simply replace the cast iron rotor and reuse the hats.



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