Hornby R3951 GBRf Class 66 Co-Co 66780 The Cemex Express - Era 11
| Gauge | 00 |
| Finish | Standard |
| Length | 280mm |
| DCC Type | DCC Ready |
| Period | Era 11 (2014 +) |
| Operator/Livery | GBRf/Cemex, Silver, Red & Blue |
| Class | Class 66 |
| Designer | Electro-Motive Diesel |
| Entered Service | 1998 |
| Minimum Curve | R2 |
| Age Suitability | 14+ |
| Motor | 5 Pole Skew Wound |
| Wheel Configuration | Co-Co |