The Spartan locker by USA standard gear is a mechanical locker that fits inside a standard case. The Spartan locker's design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The drivers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect. This unit does use the stock side gears.

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Call Overly's Offroad at 865-995-9800 for installation or help.