Introducing the SuperPro Caster Correction Radius Arm Kit Sold by Fulcrum Suspensions: The Ultimate Solution for Landcruiser and Patrol Owners. For owners of solid-axled Landcruisers and Patrols, raising your vehicle can often lead to a loss of caster, which can result in diminished straight-line stability, vague steering at higher speeds, and even caster shimmy. The SuperPro Caster Correction Arm Kit is designed to address these issues head-on, offering a seamless solution with its ‘built-in’ caster correction. Easy Installation and Superior Performance SuperPro control arms are designed for easy installation, serving as a straightforward replacement or upgrade for your suspension system. They address common issues found with OE and other aftermarket control arms, offering significant improvements.