BillaVista Offroad Tech, in conjunction with Xtreme Offroad Magazine and Pirate4x4.com brings you:

Doubler Basics - an 11 page electronic version of the tech article BillaVista originally wrote for the second issue of Xtreme Offroad Magazine. The article covers the basic theory of transfer case "doublers", advantages and disadvantages, component selection, and the basics of fabricating your own adapter to mate two transfer cases together. Click on the picture at left or title of the article to open the electronic PDF version of this article.