Installing a quality USA Standard Gear spool is a cost-effective way to get 100% lockup. Installation is easy as they install in place of your differential carrier assembly. Each USA Standard Gear 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.
D44 3.73 & DOWN 30spl SPOOL, STEEL
Installing a quality USA Standard Gear spool is a cost-effective way to get 100% lockup. Installation is easy as they install in place of your differential carrier assembly. Each USA Standard Gear 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.
D44 3.73 & DOWN 30spl SPOOL, STEEL
