Offered as direct-fit front axle upgrade for Jeep® Wrangler, The Ultimate Dana 44™ features Spicer® nickel chromoly axle shafts and SPL® 1350 u-joints with triple lip seals and full-circle clips. Axle tube thickness of 5/16 in. promotes strength, rigidity, and durability, and brackets with ¼ in. steel resist bending. Other features include selectable locking electronic differentials and spicer gearing with multiple gear ratio options: 3.73, 4.10, 4.56, 4.88, 5.13, and 5.38.