The DFC Hi-Carbon Alloy rear brake rotor is a 327mm x 20mm vented disc cast from high carbon G3000/G11H18 iron with the original equipment vane configuration for maximum heat dissipation. Full GEOMET coating provides corrosion protection rated to 400 hours of salt spray, a fine turned 16 RMS finish improves initial pad break-in, and every rotor is 100% mill balanced with disc thickness variation held to 0.010mm and lateral runout to 0.050mm maximum.
Specifications
| Type | High carbon brake rotor (DFC Hi-Carbon Alloy GEOMET) |
| Position | Rear |
| Design | Vented, OE vane configuration |
| Diameter | 327mm |
| Thickness | 20mm (18.4mm minimum) |
| Material | High carbon G3000/G11H18 cast iron |
| Coating | GEOMET, full coverage |
| Tolerances | DTV 0.010mm max, lateral runout 0.050mm max |
| Quantity | 1 |
| Part Number | 900-31050 |
| Warranty | 12 months or 12,000 miles, whichever comes first (materials and workmanship) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2006 | BMW | M3 | Base |
| 2000-2003 | BMW | M5 | 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
