Weapon-R intake systems are CNC mandrel bent out of 6061 aluminum, and then hand TIG welded to ensure a positive seal and proper fitment. Each intake system is carefully tuned, by matching the engines displacement, air intake capacity and airspeed to the intake systems tube size and length, maximizing performance output. The Dragon filter features a computer CAD designed and flow bench tested velocity stack, which greatly increases airflow and air volume into the engine, therefore increasing engine performance. Dragon filters can be disassembled to be cleaned and then re-assembled. Comes with stainless steel clamps, instructions, and all needed hardware for installation on your 03-06 Nissan 350Z.