TOMS OFFROAD HD 31 Spline Full Width Rear Axles Upgrade the strength and reliability of your Ford 9-inch rear axle with these TOMS OFFROAD HD 31 Spline Full Width Rear Axles. Designed as a heavy-duty replacement for worn factory axle shafts, these axles provide increased durability and performance for street-driven, work, and off-road vehicles while maintaining compatibility with full-width rear axle applications. Manufactured to utilize the larger 3 1/8-inch Set 20 bearing, these axle shafts offer improved load capacity and long-term durability compared to many original factory components. Whether you're restoring a classic Bronco or refreshing the rear axle assembly in your Ford Truck, these heavy-duty axle shafts provide a dependable upgrade designed for years of reliable service. Features Heavy-duty 31-spline axle shaft design Designed for Ford 9-inch rear axle applications Uses larger 3 1/8-inch Set 20 bearings Increased strength compared to worn factory axles Ideal for restoration and performance applications Full-width rear axle configuration Direct replacement design Improves rear axle reliability and durability 31.84" Long, 5 on 5.5 Lug Pattern Additional Fitment Details Fits 1978-86 Ford Bronco full-width rear axle applications Fits 1974-86 Ford F150 full-width rear axle applications Designed for Ford 9-inch rear ends equipped with 31-spline axle shafts Uses the larger 3 1/8-inch Set 20 bearing