BullyDriveline Posi Traction limited-slip differential for use in 2011-2020 Ram 1500 1/2 Ton Truck with Chrysler 9.25" ZF rear differential provides smooth aggressive traction on a wide variety of terrains. This limited-slip unit is manufactured using a high-strength nodular case, forged 4320 chromoly spider gears and Raybestos composite clutches for strength, durability and long life. Whether you’re at the race track, off-roading or enjoying a ride on the street you will experience unmatched positraction performance.

Technical Note: Bully Driveline recommends the use of high-grade Non-Synthetic GL-5 gear oil and LSD (Limited-Slip Differential) additive for smooth operation and long life. The use of Synthetic oil is not recommended and may result in noisy or aggressive operation.