This upgrade kit converts front axle wheel hubs to WARN 5 x 5.5 premium mount internal hubs. Now you can replace any and all front Jeep wheel hubs, including the infamous 5 bolt wheel hubs found on 1981-86 Jeeps. WARN premium all metal locking hubs use the proven internal spline mount locking system, which eliminates all possibility of loosening hubs. Seals are included to help lock out dirt, moisture and contaminants. These hubs have proven dependable on the most rugged terrain.