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All shafts are made out of billet steel and are supplied with hardware for the shaft, but not for the frame. Standard non-offset shafts are highly recommended if you are using performance Del-A-Lum or polyurethane bushings.The Global West:Tech TipThe shafts are made to accommodate 5/8 fine threaded locking nuts rather than a factory shaft that uses a 3/8 bolt holding the bushing in place. We have found that using bolt type upper control shafts and performance bushings tend to back the bolt off over time.If you are switching over to Del-A-Lum bushings, nut-type control arm shafts are required. Bolt type upper shafts are commonly found from the early 1970s and older. Shafts carry a limited lifetime warranty.Experience Unmatched Performance with the Replacement Control Arm Shaft for A-Body VehiclesGlobal West is proud to present the Replacement Control Arm Shaft Part Number: 715, a testament to our commitment to quality and performance. This component is meticulously crafted from billet steel, ensuring durability and longevity. Designed to accommodate 5/8 fine threaded locking nuts, this shaft is a significant upgrade over factory shafts that use a 3/8 bolt. This design enhancement prevents the bolt from backing off over time, a common issue with bolt type upper control shafts.Our Replacement Control Arm Shaft is ideal for A-Body vehicles, including the 1973-1977 Buick Century, Regal, Grand National, and other models from Chevrolet, Oldsmobile, and Pontiac. Whether youre restoring a classic or upgrading your daily driver, this component will provide a noticeable improvement in your vehicles suspension system.At Global West, we understand that installing new components can be daunting. Thats why we provide comprehensiveinstallation instructionsand video tutorials to guide you through the process. And if you ever need assistance, our dedicated customer support team is always ready to help.Dont compromise on quality when it comes to your vehicles suspension system. Upgrade to our Replacement Control Arm Shaft and experience the Global West difference. And dont forget to explore more options for your Buick on ourBuick Parts Onlinecategory or check out our range ofBuick 1973-1977 PartsandBuick 1973-1977 Control Arms.