Yukon steel spool for GM 14-bolt truck with 30-spline axles converts the axle to full-time lockup and delivers 100% traction to both wheels for demanding off-road or racing use. It installs in place of the carrier assembly and is designed for heavy loads; intended for setups using 4.10 and down ratios as specified. Not recommended for regular street driving due to constant lockup.
Yukon Gear Steel Spool For GM 14 Bolt Truck w/ 30 Spline Axles / 4.10 & Down