TeraFlex® has been professionally involved with Jeeps since the 1950s and that experience taught them how to make them perform their best. TeraFlex was started in the fall of 1996 to meet the needs of the growing market for heavy duty off road equipment and suspension enhancements. And theyve maintained a dominant hold on the market since then. TeraFlex was the first aftermarket manufacturer with a suspension system for the TJ Wrangler, and is still the only aftermarket company to offer a solution for the venerable 231 transfer cases low range gearing. In 2001, the entire off road industry was stunned at the CRD60 - an off-road-specific high-pinion 60 differential that took innovation to a new level, reinforcing their position in the industry.