Whisk together the lime juice, garlic oil, cumin, salt and pepper in a medium bowl. Transfer to a large resealable plastic bag. Add the pork chops to the bag and toss to coat. Refrigerate and marinate at least one hour.

Heat grill to medium-high heat. Oil the grill grates. Grill pork chops about 2 to 3 minutes a side over direct heat, or until you get some nice grill marks. Move chops to indirect heat and continue to cook until chops are 145 degrees F in the middle, about 15 minutes more. Transfer to a serving platter and let stand about 10 minutes, then serve.