Construction Details: CNC-milled 6061 forged billet aluminum for superior strength while being weighing under 2lbs each (lighter than the thinner stock stamped steel) Sealed spherical bushings for maximum durability and enhanced road feel and handling Self-lubricating Teflon lining for a quiet and maintenance-free lifetime use Anodized hard coating to maintain the beauty of the billet aluminum milling for years to come Install out of the box, with no adjustments Made in the USA 30 Day Money Back Guarantee All of our suspension products are designed to perform flawlessly and to impress. We offer a 30 day no questions asked money back guarantee to stand behind our quality and performance. 200,000 Mile Warranty These are designed to last longer than your car. To put a number on it, we will warranty these for 200,000 miles (non-transferable).