Truhart Rear Upper Control Arm Adjustable Camber Kit 2004-2008 TL Hardened rubber bushings provide more direct feel Includes lifetime unlimited mileage warranty We have selected factories for our new TruHart line through personal visits, first hand product testing, extensive factory background research and quality control follow up visits. Our suspension arms and bushings are manufactured in a specialized facility who has been in the OEM replacement industry since 1989 and focusing on performance products since 2001. Most other manufacturers use generic bushings manufactured by an outside factory then cut to their specs. All parts of the production process are done in our factory including manufacturing the bushings from raw material and formulating them for their specific purpose. Because we are able to monitor control processes through the whole production phase and use the highest grade raw materials on our products.