Ford 9" Factory Back Truss

Ford 9" Factory Back Truss

Factory 9" housing? This brings our crowned truss strength to the stock game.

Our well-known crown-shaped truss design isn’t just for custom housings anymore — this kit adapts it for factory Ford 9" housings without compromising strength or weight. Instead of the typical flat-back profile, this truss uses four strategic bends to drastically increase rigidity across the rear. It’s long enough to reach the brake brackets, eliminating the usual weak spots where other trusses fall short. Built from .135" steel, it strikes a balance between durability and weight savings — thicker than 1/8" but not overkill.

What really sets this design apart is the way it mounts. Instead of focusing heat on one side of the tube, the truss runs the full width of the axle, allowing welds 180 degrees apart. That means far less risk of axle warp during installation. It’s a practical, purpose-built approach made for guys who care about keeping things true and tight the first time around.

Key Features

• Part Number: R1386
• Designed for factory Ford 9" axle housings
• Crown shape adds significant rigidity vs flat-back trusses
• Constructed from .135" steel for optimal strength-to-weight ratio
• Full-length design reaches brake brackets to avoid weak points
• Wide-mount truss reduces axle warping by balancing weld heat

Note

Due to factory Ford 9" housing variations, some trimming or shortening of the truss may be required during installation.