1973-79 Ford F-100 F-250 Rear End Lowering Spring Shackles. This work good with our lowering hangers. When you do a rear end flip the 9” rear end center hit the bed floor during bumps. With lowering shackles and hangers, it’s adjustable. Using lowering hangers and the longer shackles we sell; you can get a 5-1/2” drop or less if you’d. Lowering hangers and shackles are a product of Nostalgia Sid’s LLC. The shackles work with stock springs, reversed eye springs or lowering springs. We also have lowering rear spring hangers and C-notch kits. We carry lowering suspension parts for a number of different trucks including Dodge and Chevrolet. Look at our store to find these products. Thank you for looking!