Yukon's Dura Grip is a Positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip Posi limited-slip is engineered for long life and is completely rebuildable. Dura Grips are built with a high strength nodular case, forged 4320 chromoly spider gears, and Raybestos composite clutches. For unmatched Positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon's Dura Grip. Whether it's at the track, off roading, racing or on the street, you deserve the confidence that these units offer.