2025 Toyota Sienna Trims Comparison [+ Chart] SuperPro SPF5349K Radius Arm Bushing Kit. SuperPro SPF5349K Radius Arm Bushing Kit Control arm bushings form the vital pivot and link between all core suspension components. Worn bushings allow significant deflection and movement leading to slower reponses, a sloppy drive, irregular and excessive tire wear and diminish every facet of the way your vehicle drives. The wear is accelerated and the impact of worn bushings is even greater in upgraded trucks and SUVs where the higher weight and impact of items like larger wheels and tires all work the bushings harder. SuperPro's polyurethane bushings are the culmination of nearly 5 decades of suspension expertise and development in Australia's harshest terrain. Designed with durability as a paramount feature we also bring ride and passenger comfort to the forefront of Superpros development. Your vehicle should treat you as well on the way to and from the trail as it performs on your adventure. Our designs and material compositions retain OEM levels of noise and harshness isolation while delivering superior performance and road manners in all conditions. Warranty: LifetimeFITMENT Radius Arm Bushing Kit works with the following vehicles. 2013 land rover range rover autobiography Download Now