This product is a heavy-duty left lower suspension arm designed to deliver maximum strength and durability for high-performance RC driving. It is molded from impact-resistant composite material to withstand extreme bashing, hard landings, and rough terrain conditions. The precision-engineered design maintains proper suspension geometry while providing a direct factory replacement fit. It is compatible with Traxxas X-Maxx 6S and 8S models that use part 7831T for the left lower suspension arm.