All of our aluminum radiators are manufactured in the USA!!! We use the latest brazing technology that does not require the use of EPOXY! In manufacturing our radiators, we use heavy duty tubes, fins and headers that you can feel the difference in weight against our competitors. Our standard radiator consist of (2) rows of 26mm tubes, but we offer a wide range of tube widths and row counts to meet most any cooling requirement you might have. All our radiators are TIG welded to give you that neat, clean look that a custom radiator requires.