Add weight low on the chassis with these Treal Hobby brass inner front portal covers for Traxxas TRX-4 and TRX-6 models. Made from heavy brass, these covers add 134g of total unsprung weight to help lower the center of gravity and improve stability while crawling. The added weight at the portal housings can provide a more planted feel over technical terrain and steep obstacles. They also give the front portal housings a clean, upgraded appearance while complementing other brass components on your rig.