The DFC Quickstop drilled brake rotor is a direct OE replacement for the left front of the BMW M2, M3, and M4. It is cast from premium G3000/G11H18 grade iron and cross-drilled to shed heat and brake gases, then precision mill-balanced for smooth, vibration-free stops. The 380mm disc keeps the OE vane configuration for proper heat dissipation and ships with a non-directional finish that speeds pad break-in.
Specifications
| Type | Drilled Brake Rotor, DFC Quickstop Replacement |
| Position | Front Left |
| Material | G3000/G11H18 Cast Iron |
| Finish | Non-Directional, Non-Coated |
| Size | 380mm |
| Quantity | 1 |
| Part Number | 620-31129D |
| Warranty | 12-Month / 12,000-Mile Limited |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2016-2018 | BMW | M2 | Base |
| 2015-2018 | BMW | M3 | Base |
| 2015-2020 | BMW | M4 | Base |
| 2019-2020 | BMW | M4 | CS |
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
