Trac-Loc Limited-Slip Differential

The Yukon Trac-Loc, also known as the Dura Grip, is a limited-slip differential engineered for Ford 9-inch axles with 28-spline axles. This unit provides aggressive yet smooth traction, enhancing driver confidence and performance across diverse terrains. Its construction includes a high-strength nodular case, forged 4320 chromoly spider gears, and composite clutches, all contributing to its durability and long life. The Trac-Loc is designed to be fully rebuildable, and Yukon recommends using high-grade Non-Synthetic GL-5 gear oil along with their specific LSD additive (Part number OILADD) for optimal operation and longevity. The use of synthetic oil is not advised as it may lead to aggressive or noisy performance. Additionally, this differential requires the use of ring gear bolt part number YSPBLT-014. It is important to note that this unit has 1.783-inch bearing journals and will not fit in Strange Engineering aluminum dropouts. While the product page states "Universal or product-specific fitment" and "Fits all Gear Ratios" for Ford 9" with 28 spline axles, it is always recommended to verify fitment with a sales representative if there are any uncertainties.