The D4 still has the same roller frame, tractor frame, C-frame, Cat C4.4 engine and horsepower that were found on the D6K2. The D6K2’s proven undercarriage design is still there too. With eight ...

Formerly ARO with Assist, Cat Assist with ARO (attachment ready option) suite of features will be included as a standard feature on Cat D4, D5, D6, D6 XE and D7 models. Additionally, a new Cat ...