Dragon Intake Systems are CNC Mandrel Bent out of 6061 aluminum, and then Hand Tig Welded to ensure a positive seal and proper fitment. Each one of Weapon R's intake systems is carefully tuned, by matching the engines displacement, air intake capacity and airspeed to the intake systems tube size and length, maximizing every engines performance output. Each system includes Weapon R's World Famous Dragon Filter, which provides maximum airflow, with the protection of high quality dense Poly Urethane Foam. Many studies have shown Flow rates of up to 80% more Air and Better Dirt Filtration with Foam Filter than the conventional cotton filter. The Dragon Filter features a Computer CAD Designed and Flow benched Tested Velocity Stack, which greatly increases airflow and air volume into the engine, therefore increasing engine performance.