RPM FRONT LOWER A-ARMS FOR TRAXXAS UNLIMITED DESERT RACER (Box 1)RPM Front Lower A arms are redesigned from the ground up with one goal in mind? Making them tougher than anything else available without breaking the bank. Starting with some of the best engineering grade materials, building a completely new, original, one piece A arm designed with the UDR's needs in mind. Beefed up the support arms in the direction of suspension travel. We then changed the angle of the A arm at the pivot ball to improve clearance at