The Artec Rear Top Truss is a 9-inch rear axle truss with a 3½-inch tube intended for 1970–1985 Ford F-150 9-inch applications. This truss reinforces the rear axle tube and provides a solid mounting backbone for suspension link attachments, improving structural support in high-load or modified rearend setups that use the 9-inch Ford axle.
Artec Industries 70-85 Ford F-150 9 Inch Rear Top Truss 3 1/2 In Tube