Fortune Auto not only designs and builds suspension, they TEST IT. What better way to test a product than in the harshest of environments - the race track. All of their products have been extensively tested and refined on their race cars. This allows them to determine what works in the real world. Furthermore; they know what works and how to adjust their products to get maximum results. Purchasing Fortune Auto products guarantees you the best possible product for the money. They also back all of our products with their legendary service and warranty. Their North American facility has full service capabilities from re-valving to full-on shock rebuilds.