Yukon Gear Spool For GM & Chrysler 11.5in / 30 Spline - YP FSGM11.5-30

Yukon Full Spools are a cost-effective way to convert a diff to 100% lockup. Installation is easy as they install in place of your differential carrier assembly. Each Yukon spool is made from high-quality 8620 steel and heat treated for additional strength. A spool is an outstanding choice for dedicated off-road and drag racing vehicles only.
Installation Instructions
Installation Instructions