This DFC GEOSPEC Coated rotor is a 390mm front disc, cross-drilled and slotted to vent gas and clear dust and debris from the pad face. The patented GEOSPEC coating covers the entire casting, including the vanes and hat, so the rotor resists rust in service and installs with no pre-degreasing step. Each rotor is 100% precision cut and mill balanced for smooth, vibration-free stopping at any speed, and is machined to OEM form, fit and function. Sold individually; two rotors are required per front axle.
Specifications
| Type | GEOSPEC Coated drilled & slotted brake rotor |
| Position | Front |
| Diameter | 390mm |
| Finish | GEOSPEC patented coating, full casting, silver-gray |
| Balancing | 100% precision cut and mill balanced |
| Quantity | 1 (sold individually, 2 required per axle) |
| Part Number | 634-63142 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2013-2016 | Mercedes-Benz | GL63 AMG | Base |
| 2016-2019 | Mercedes-Benz | GLE63 AMG | 4Matic |
| 2016-2019 | Mercedes-Benz | GLE63 AMG S | 4Matic |
| 2017-2018 | Mercedes-Benz | GLS63 AMG | Base |
| 2012-2015 | Mercedes-Benz | ML63 AMG | Base |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
