This is the factory stuff! This
clutch type unit features precise torque loading and puts the power to the
ground by eliminating the traction loss of a spinning opposite wheel. The
design of this unit incorporates a progressive rate of slippage that
delivers a predicable on and off-road performance and reduced drive line
component stress. Translation: It generally won't break axles or CV's!This
is the perfect compliment to your Frontier for trail riding and rock
crawling. A perfect match to go with the CALMINI
transfer case gears.