Brembo's Prime line is the straight OE replacement rotor, a plain faced casting finished in Brembo's solvent free UV coating so the whole disc, including the internal ventilation chambers, is protected against corrosion instead of surface rusting between drives. This is the front rotor for R172 cars built with the sports package brake: 344 mm across and 32 mm thick, internally ventilated, with a 30 mm minimum wear thickness, a 65 mm height and a 5 hole face on a 67 mm centering diameter. Cars without the sports package take the smaller 322 mm disc instead, so check the fitted rotor before ordering. High carbon cast iron, where applicable, keeps noise and vibration down, a fixing screw kit is included, and the part number and minimum thickness are marked on the casting. Brembo recommends replacing rotors and pads together to restore full braking performance.
Specifications
| Type | Plain face, UV coated brake rotor (Brembo Prime) |
| Position | Front axle |
| Diameter | 344 mm |
| Thickness | 32 mm (30 mm minimum) |
| Height | 65 mm |
| Bolt Holes | 5 |
| Centering Diameter | 67 mm |
| Ventilation | Internally ventilated |
| Fitment Note | For vehicles with the sports package brake (344 mm front) |
| Material | Cast iron, high carbon where applicable |
| Finish | UV coated |
| Included | Fixing screw kit |
| Quantity | 1 (sold individually) |
| Part Number | 09.B744.51 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2020 | Mercedes-Benz | SLC300 | Base |
| 2020 | Mercedes-Benz | SLC300 | Final Edition |
| 2012-2015 | Mercedes-Benz | SLK250 | Base |
| 2012-2016 | Mercedes-Benz | SLK350 | 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
