Quick view Yukon Gear & Axle Yukon Gear Trac Loc Positraction / Ford Super 8.8in / 34 Spline / 15-20 F-150 - YC F8.8-4-34T/L Compare $747.99 The Trac Loc is a less aggressive, street-friendly clutch-type limited slip unit that is suitable for daily driven vehicles and mild off-road use. The clutches work to maintain synchronization between the tires, transferring more torque to the tire that... Add to Cart Add to Cart