The Nitro Trac-Lock provides the ultimate in traction for Ford 8 inch and 9 inch differentials. This is not like the old factory units that had a tendency to crack the case. The Nitro Trac-Lock uses a billet and forged case for strength you can depend on. Great all around torque-bias ensure this unit will suit your needs for Hot Rods, Muscle cars, Vintage show cars and even 4x4s.
WARNING: Cancer and Reproductive Harm