^^^Right! As added clarification, Class C's don't need a FRONT track bar because the front axles are already mounted to the frame. Many Class A's have a single I-Beam axle, one piece, all the way across the front. Same as C's with the rear axle. So many, maybe most, A's can benefit from Front and Rear track bars. C's, only Rear.
Somebody tries to sell you a front track bar for a C, head for the exit.