Girodisc Front Brake Rotors 390x36 for Mercedes AMG GT S, C, and R (2016+), AMG GT63 and GT63 S (2019+), and C63 Black Series (W

These Girodisc D1-123 front replacement braking surfaces (390 × 36 mm) allow you to replace the braking surfaces on your GIRODISC cup-style rotors for the Mercedes-AMG GT S, C, and R (2016+), Mercedes-AMG GT63 and GT63 S (2019+), and Mercedes C63 Black Series (W204) (2012), Mercedes C63 S (W205) (2015+), Mercedes CLS63 (W219) with P30 package (2007–2011), Mercedes E63 (W213) (2017+), Mercedes GLC63 (X253) (2016+), Mercedes S63 and S65 (W222) (2014–2020), Mercedes SL55 (R230) with P30 package (2007–2008), Mercedes SL63 (R230) with P30 package (2009–2012), Mercedes SL63 (R231) (2012–2017), Mercedes SL65 (R230) with P30 package (2005–2011), Mercedes SL65 (R231) (2012–2018), Mercedes SLS (2010–2015), while retaining compatible rotors after inspection. These cast-iron tracks maintain the floating mounting’s functionality and facilitate maintenance of a braking system subjected to repeated stress. Sold in pairs, without rotors.

The curved internal cooling fins channel air through the disc to dissipate heat during repeated braking. The floating mounting limits stresses caused by differences in thermal expansion between the rotor and the caliper housing and helps the rotor center itself between the brake pads, maintaining consistent contact even when hot.

New brake pads must be installed with new discs or rotors. Their shape and compound must match the mounting configuration, cast iron type, and intended use; follow the specific requirements for this part number and perform the prescribed break-in procedure.

Specifications for Girodisc D1-123 tracks for compatible vehicles

• Brand: Girodisc
• PartNumber: D1-123
• Position: front
• Sizes (diameter × thickness): 390 × 36 mm
• Vehicles and models: Mercedes-AMG GT S, C, and R (2016+); Mercedes-AMG GT63 and GT63 S (2019+); Mercedes C63 Black Series (W204) (2012); Mercedes C63 S (W205) (2015+); Mercedes CLS63 (W219) with P30 package (2007–2011); Mercedes E63 (W213) (2017–); Mercedes GLC63 (X253) (2016–); Mercedes S63 and S65 (W222) (2014–2020); Mercedes SL55 (R230) with P30 package (2007–2008); Mercedes SL63 (R230) with P30 package (2009–2012); Mercedes SL63 (R231) (2012–2017); Mercedes SL65 (R230) with P30 package (2005–2011); Mercedes SL65 (R231) (2012–2018); Mercedes SLS (2010–2015)
• Braking surface: high-resistance cast steel
• Packaging: pair of brake pads, one left and one right; rotors not included.
• Compatible rotors: rotors from the corresponding Girodisc kit; check by part number; not universally compatible with original equipment rotors.
• Mounting hardware: mounting kit included; replace the entire disc-to-hub mounting assembly during reassembly.
• Related catalog part: A1-123.
• Internal ventilation: directional curved fins
• Minimum thickness: 34 mm
• Original rotor diameter: 390 mm
• Manufacturing of main components: United States

Vehicles compatible with Girodisc part number D1-123

• Mercedes AMG GT S, C, and R (2016+)
• Mercedes AMG GT63 and GT63 S (2019+)
• Mercedes C63 Black Series (W204) (2012)
• Mercedes C63 S (W205) (2015+)
• Mercedes CLS63 (W219) with P30 package (2007–2011)
• Mercedes E63 (W213) (2017+)
• Mercedes GLC63 (X253) (2016+)
• Mercedes S63 and S65 (W222) (2014–2020)
• Mercedes SL55 (R230) with P30 package (2007–2008)
• Mercedes SL63 (R230) with P30 package (2009–2012)
• Mercedes SL63 (R231) (2012–2017)
• Mercedes SL65 (R230) with P30 package (2005–2011)
• Mercedes SL65 (R231) (2012–2018)
• Mercedes SLS (2010–2015)

• Mercedes AMG GT S, C, and R (2016+): Excludes carbon-ceramic brakes.
• Mercedes AMG GT63 and GT63 S (2019+): Type X290.
• Mercedes C63 S (W205) (2015+): Excludes carbon-ceramic brakes on the front.
• Mercedes CLS63 (W219) with P30 package (2007–2011): With P30 package.
• Mercedes E63 (W213) (2017+): Excludes carbon-ceramic brakes.
• Mercedes GLC63 (X253) (2016+): Excludes carbon-ceramic brakes.
• Mercedes S63 and S65 (W222) (2014–2020): Excludes carbon-ceramic brakes.
• Mercedes SL55 (R230) with P30 package (2007–2008): With P30 package.
• Mercedes SL63 (R230) with P30 package (2009–2012): With P30 package.
• Mercedes SL63 (R231) (2012–2017): Excludes carbon-ceramic brakes.
• Mercedes SL65 (R230) with P30 package (2005–2011): With P30 package.
• Mercedes SL65 (R231) (2012–2018): Excludes carbon-ceramic brakes.
• Mercedes SLS (2010–2015): Excludes carbon-ceramic brakes.

Each application is subject to its specific brake system, calipers, and any requirements for brake pads or spacers. Please verify these requirements before ordering.

Girodisc D1-123 Mounting Requirements

• Mercedes AMG GT S, C, and R (2016+): Excludes carbon-ceramic brakes.
• Mercedes-AMG GT63 and GT63 S (2019+): Type X290.
• Mercedes C63 S (W205) (2015+): Excludes carbon-ceramic brakes on the front.
• Mercedes CLS63 (W219) with P30 package (2007–2011): With P30 package.
• Mercedes E63 (W213) (2017+): Excludes carbon-ceramic brakes.
• Mercedes GLC63 (X253) (2016+): Excludes carbon-ceramic brakes.
• Mercedes S63 and S65 (W222) (2014–2020): Excludes carbon-ceramic brakes.
• Mercedes SL55 (R230) with P30 package (2007–2008): With P30 package.
• Mercedes SL63 (R230) with P30 package (2009–2012): With P30 package.
• Mercedes SL63 (R231) (2012–2017): Excludes carbon-ceramic brakes.
• Mercedes SL65 (R230) with P30 package (2005–2011): With P30 package.
• Mercedes SL65 (R231) (2012–2018): Excludes carbon-ceramic brakes.
• Mercedes SLS (2010–2015): Excludes carbon-ceramic brakes.

Brake pads and braking systems for compatible vehicles

Choose brake pads whose shape is compatible with the calipers and the D1-123 track, and whose compound is suitable for sport driving or track use. The Endless, pagid Racing, or Ferodo Racing ranges may be considered after verifying the appropriate part number.

For intensive use, we recommend compatible aviation-grade hoses and a high-performance brake fluid that meets the vehicle’s specifications, along with proper bleeding and fluid replacement. This recommendation complements a mounting compatible with the original hydraulic system.

Maintenance of the Girodisc mounting on compatible vehicles

When worn, replace the pads with the part number compatible with your existing rotors. Reusing a rotor for up to three pad replacements is subject to inspection of its condition, its mounting components, and the mounting instructions; this number does not constitute a guaranteed service life. Use a new mounting component each time you replace the pads.

FAQ — Girodisc D1-123 for compatible vehicles

What are the sizes of the D1-123 tracks for my vehicle? The part number shown measures 390 × 36 mm and mounts to the front axle. The track height, mounting bracket, and cups must also be compatible with the mounting.

Is the product sold in pairs? Yes. It includes a left and a right component for the same axle. The brake shoes are not included.

Do I need to replace my vehicle’s brake pads?Yes. Always install new brake pads with new rotors or new braking surfaces. Their shape and compound must be compatible with the D1-123 track and the calipers. Then break in the rotors and pads according to the prescribed procedures.

How do I identify the left and right sides? Girodisc rotors come with a label attached to each rotor: LEFT for the left side and RIGHT for the right side, as viewed from the direction of travel. On a left-hand-drive vehicle, “LEFT” corresponds to the driver’s side and “RIGHT” to the passenger side. Follow these labels and the instructions. On models with curved internal fins, the rolling direction depends on this internal ventilation; the surface grooves alone are not sufficient to determine the side.

How do I break in this mounting on my vehicle? Follow the Girodisc procedure and the brake pad manufacturer’s instructions to build up an even transfer ply. The PDF documents below detail installation and break-in.

PDF Documents for Mounting and Break-in

We have included two PDF documents below: an instruction manual for installing and running in the discs, and an instruction manual for installing new tracks on existing bowls. Consult the document that applies to your specific task before you begin.

Key Features of the Girodisc D1-123

• 390 × 36 mm size for front braking on compatible vehicles.
• Internal ventilation via curved fins to dissipate heat.
• Replaceable tracks to maintain a two-part mounting.
• Left/right pair identified for mounting.
• Compatible aluminum rotors are retained to preserve the benefits of the two-piece mounting on unsprung and rotating masses.