aFe Power is now offering a tube and filter upgrade kit for the 2012-13 Jeep JK air intake system. The larger air filter and higher flowing tube will out flow the metal tube kit by 10 percent or 70 percent over the stock intake. The upgrade kit utilizes a heat-insulting roto molded tube and new larger better flowing filter fits onto the existing 3-angle adaptor. The upgrade kit comes with all the necessary hardware, clamps, and couplers for a simple clean install. 5-1/2inch 360 degree air filter: This intake utilizes 5-1/2 inch Pro Dry S performance air filters for maximum flow. This 3-layer progressive, non-oiled synthetic air filter requires no oils for cleaning for maximum convenience. Dyno tested intake tube: The intake tube is designed to maximize air velocity and is dyno tested and flowed using the latest engineering tools for maximum roto molded tube; having a roto molded tube versus an aluminum tube offers better resistance from the unwanted engine heat.