9 Inch Rear End Housing Kit With 31Spline Axles, 54 Inch Hub Width, Fabricated Steel Housing, Heavy Wall 3 Inch Tubes And Beefed Up Street And Track Drivetrain Upgrades

9 Inch Rear End Housing Kit with 31-Spline Axles
✔️ 54 in hub-to-hub width, heavy-wall 3 in tubes, two 31-spline axles

This 9 inch rear end housing kit is built from fabricated steel for a strong, race-ready backbone on street and track builds. It includes two 31-spline alloy axles and multi-pattern flange compatibility to fit common wheel setups.

✅ 54 in overall hub width
✅ 31-spline alloy steel axles included
✅ Heavy-wall 3 in axle tubes (3/16 in wall)
✅ Multi-pattern axle flanges: 5x4.5, 5x4.75, 5x5
✅ Pumpkin-centered housing design reduces distortion during welding
✅ Includes axle bearings, seals, and bearing retainers

💡 What is a Ford 9 inch rear end housing kit with 31-spline axles used for in high-horsepower street and drag race builds?

This handy setup provides a solid foundation for big torque applications. - Supports high torque and launch loads on street and strip - Allows multi-pattern wheel applications for custom wheels - Simplifies suspension mounting with a centered pumpkin design - Keeps axle alignment reliable for track days and daily driving