They flip the position of the leaf spring and axle so that the springs move from beneath the axle to the top. When flipping the axle and leaf spring, it’s important to consider shorter shocks or shock extensions.
Rear 6" Drop Axle Flip Kit For Dodge Ram D100 D150 Ramcharger 2WD 1972-1993
1972-1993 Dodge Ram D100 D150 6" Drop Axle Flip Shock Relocater Kit Lowering Kit
6" Drop Axle Flip Kit Lowering Kit For Silverado GMC Sierra 1500 1999-2007
6" Drop Axle Flip Kit Lowering Kit For Silverado GMC Sierra 1500 99-07
Rear 6" Drop Axle Flip Kit For Dodge Ram D100 D150 Ramcharger 2WD 1972-93
1972-1993 Dodge Ram D100 D150 6" Drop Axle Flip Relocater Kit Lowering Kit