AEM Cold Air Intake System Air Filter Outlet Shape: Oval Clamp Material: Stainless Steel Clamp Style: Worm Gear Clamps Included: 2 Couplers Included: 1 Estimated Horse Power Gain: 5 HP @ 6000 RPM Filter Color: Red Filter Material: Non-woven Synthetic Horse Power Increase: 5 HP Intake Pipe Color / Finish: Gunmetal Gray Intake Pipe Material: Aluminum RPM: 6000 Air Filter Color: Red Air Filter Material: Non-woven Synthetic California Restricted: Not legal for sale or use in California Estimated Horsepower Gain: 5 HP @ 6000 RPM Product Style: AEM Cold Air Intake System Replacement Filter: 21-2127DK Title: AEM AEM-21-810C AEM Cold Air Intake System Weight: 12.5 lb (5.7 kg) Mounting Hardware Included: Yes