Stage 4 Re-Gear Kit upgrades front & rear diffs, 28 spl, incl covers/fr&rr axles. Yukon Stage 4 kits include front and rear ring and pinion sets, Master Overhaul kits, Yukon Hardcore Diff Covers, and chromoly front and rear axles. Theyre also an opportunity to improve traction by moving to a more aggressive gear ratio.
