This DFC front brake rotor is a hi-carbon alloy OE-replacement disc shared across the BMW 230i, 330i/330e, 430i, X3, X4, Z4, and i4, plus the Toyota GR Supra. It is finished with a Geomet corrosion-resistant coating to extend service life, and combines premium G3000/G11H18 iron castings with an OE vane configuration for efficient heat dissipation, plus 100% precision mill-balancing and a fine-turned 16 RMS surface to promote pad break-in and reduce vibration at speed. Confirm fitment against the application table below.
Specifications
| Part Number | 900-31171 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2022-2025 | BMW | 230i | Base / xDrive |
| 2019-2024 | BMW | 330i / 330e | Base / xDrive |
| 2021-2025 | BMW | 430i | Base / xDrive / Gran Coupe |
| 2018-2026 | BMW | X3 | sDrive30i / xDrive30 / xDrive30e / xDrive30i |
| 2019-2025 | BMW | X4 | xDrive30i |
| 2019-2025 | BMW | Z4 | sDrive30i |
| 2025 | BMW | i4 | eDrive40 |
| 2021-2024 | Toyota | GR Supra | 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
