The BLOX Racing Composite Intake Velocity Stack incorporates race proven intake technology into a product designed for daily driven vehicles. It is designed to optimize and maximize air flow rates entering the induction system. Injection-molded from PA66 glass-filled nylon, it significantly reduces the amount of heat soak absorbed by the velocity stack and then transferred to the air. The design and construction helps to reduce the overall weight compared to metal counterparts, which in turn, reduces the mechanical stress placed on existing air induction system and mounts. The BLOX Racing Velocity Stacks are also available in high quality aluminum. Both are designed to accept air filters.