Yukon Gear 11.5in Chrysler & GM Helical Gear Type PositractionYukon gear type helical limited slip differentials know how to put the power down. They use floating helical cut worm gears that lock the torque down when acceleration or wheel slippage occurs, transferring torque to the tire with the best traction in a smooth progressive manner as torque is withheld from the tire that is slipping. Since gear teeth not clutch packs transfers the torque these LSDs are a high performance low maintenance proposition