Manufactured by MaxTrac Suspension | 440513 | 1988-06 Chev/GMC K1500 Front Lowering Torsion Keys - 1-3 inch Drop Height, Fits 4wd and torsion bar equipped trucks, Maxtrac lowering keys are available for select 4wd trucks. They are indexed differently from factory allowing you to achieve a lowered stance on your four wheel drive trucks. Although they are easy to install you will require the use of a special torsion bar unloading tool to take the tension off of the adjuster bolts in order to remove and re-install them. Product information updated on 2024-07-04. This product can ship by Small Parcel