This spindle lift kit is cast from ductile iron, this is 3X stronger than grey iron which gives superior strength to welded spindle kits. Jake´s products are proudly made in the U.S.A in Cario, Georgia. They use precision welding techniques which allows their products to last through time. Their lift kits are engineered with a wider stance for safety. Jake´s is the only lift kit brand to offer a disc brake option. All of Jake´s components are designed to integrate seamlessly. Jake´s provides a custom look with simple installation. Fits gas models ONLY.