Sky's Offroad Design (85–97) Super Duty Rear Leaf Spring Conversion Shackles

Convert your OBS to use 1999–2007 Super Duty Rear Leaf Springs

Also known as boomerang shackles, these precision-built shackles allow 1985–1997 Ford F-250 and F-350 trucks to easily accept 1999–2007 Super Duty rear springs without major fabrication or heavy modification to the stock mounts.

🔩 What’s Included:

• Shackle pair

• Polyurethane bushings

• Steel sleeves

✅ Features:

• Direct-fit conversion for 99–07 Super Duty leaf springs

• No added lift — maintains factory ride height

• Constructed for bolt-in compatibility with existing hanger and spring mounts

• Dimensions:

  • 4.5" eye-to-eye length

  • 5/8" spring eye bolt hole

  • 9/16" hanger eye bolt hole

📦 Application:

• Truck: 1985–1997 Ford F-250 / F-350

• Springs: 1999–2007 Ford Super Duty rear leaf springs