JAZ Products maintains their own equipment and molds, producing only the highest quality fuel cells. Their Circle Track Remote Fill Fuel Cells are molded in a seamless cross-linked polyethylene outer shell for exceptional quality over the competition. Each circle track remote fill fuel cell features a 45°, 2-1/2" diameter filler neck with spring loaded flapper valve for filling the fuel cell through the fender, bumper or anywhere where the filler hose is directly routed. Available with or without foam, JAZ only uses the best safety foam on the market, which has up to a 10x longer service lifespan than that of other non-fuel approved foams. Designed specifically for circle track applications, the fuel pickup hose is routed directly to the right rear corner of the cell to maximize fuel pickup. All circle track fuel cells exceed SFI 28.1 and are accepted by most sanctioning organizations.