JCB 3DX super Backhoe Loader With best-in-class hydraulic forces and durable transmission, the 3DX Super ecoXcellence Backhoe Loader is the master of every job. The robust one-piece structure and D-Section Loader give these Backhoe Loader unassailable advantage over its counterparts. 4DX Backhoe Loader Apart from the robust structure and D-Section Loader; idle time monitoring, fuel level information, engine status and GPS tracking, the 4DX ecoXcellence Backhoe Loader is one of the most modern Backhoes available in the marketplace.