Our 63 Series kits are truly state-of-the-art. We start with the largest conical shaped High-Flow air filter we can fit into the engine compartment while using factory holes and mounting points. This extra filter size provides even more airflow at lower restriction than a standard K&N O/E replacement filter that is limited to the size of the factory air box. The oversize air filter also captures and holds more dirt increasing the service life before a cleaning is required (up to 100,000 miles). We attach the filter to a rotationally molded tube made from interlaced High Density Polyethylene. This process allows us to precisely shape the tube to reduce turbulence and accelerate airflow into the engine. This is why some of our tubes have unique shapes or indentations that are specifically engineered for each application. Finally the tube is connected to the engine with adapters made from high strength materials such as silicon and reinforced nylon and ensures long life. Put all this together and you have the best high-flow intake system available today. Fits all 2006-2013 Z06 Only. Estimated Horsepower Gain: 27.22 HP @ 5600 RPM. CARB Exempt: No Weight: 8.8 lb.