The Yukon Mini Spool for GM 7.6in differentials with 28-spline axles is a low-cost traction option that installs into a standard open carrier in place of the spider gears to deliver full-time lockup and 100% power to both wheels. Yukon notes these mini spools are not recommended for street-driven vehicles and advises full spools for large tires or very high-horsepower applications; they are built from high-quality materials for strength in performance use.
Yukon Gear Mini Spool For GM 7.6in w/ 28 Spline Axles