Specs and Features 7" height dry filter Composite lightweight V-stack made from injection molded PA66 nylon Black color velocity stack Red color only available in 3.5" kit Neck diameter options: 2.5", 3.0", 3.5", 4.0" Emissions Compliance This item does not ship to California. Product Description  The BLOX Racing performance air filter kit features its 7" height performance air filter, a composite velocity stack, and silicone hose coupler with clamps. Kits are dyno-proven to increase horsepower and torque.The dry element filter prevents any sensors from becoming soaked with oil that is normally associated with wet filter brands.BLOX Racing composite velocity stacks are injection-molded from PA66 glass-filled nylon. Composite significantly reduces the amount of heat soak absorbed by the velocity stack and then transferred to the air. BLOX Racing velocity stacks incorporate race proven intake technology into a product designed for daily driven vehicles. Velocity stacks are designed to optimize and maximize air flow rates entering the induction system. Ideal for naturally aspirated and turbocharged applications.