SAMIX have introduced a range of option parts for the Traxxas TRX-4. First up and made to improve the durability by adding 55g are the brass portal knuckle covers. They are made from high quality black coated brass material to improve climb performace and offer greater stability thanks to a lower CG. Also new are the scale brake rotors made to add rigidity and increased durability. The brass portal knuckle cover and scale brake rotors are available separately or as combo set.