In Australia we call it a nudge bar.  Americans often refer to it as a bull bar.  Whatever you call it, don't leave your Grand Cherokee unprotected upfront. This 2.5" steel bar is perfect for the occasional protection required, and great place for mounting accessories like lights or antenna.
 
Benefits
Protects the front of your Grand Cherokee from small bumps or can be used to nudge things out of the way
Great platform for mounting lights (requires clamp on mounts which are not included)  
 
Features
Made from 2.5" x 2mm Steel tube. 
Zinc plated then powder coated matte black
Works with Grand Cherokee Parking Sensors 
Works with Grand Cherokee Adaptive cruise radar
Works with Offroad Animal front bumper and hidden winch mount or can be run alone
Suits up to 32" LED Light Bar