Our upgraded A-Arm bushing is made from High Quality Delrin, we have built in 3 layers of protection against mud, sand, grit. Our bushings are Gun Barrel drilled giving you 100% grease coverage. Our precision fit allows the inner 4130 sleeve to snap in on the ends and give you the best seal possible. Our final layer of protection includes a exterior O-Ring Groove designed to hold grease keeping the grime out while lubricating the bushing and metal tab. With this kit you will be way ahead of the others with less maintenance and more coverage. Don’t be left in the dust!