1,000,000 MILE WARRANTY. You can install our sway bar end links with confidence knowing that every part we sell is backed by our industry-leading 1,000,000 mile limited warranty. We can offer this because our parts are engineered, tested, re-tested, and subject to strict quality control procedures our quality is second to none. PRECISION FIT AND FINISH. Proforged sway bar end links are built using some of the toughest steel on the planet. Bolt-and-sleeve type links are built with high quality hardware, and tie rod style links feature forged SAE4140 chromoly steel studs and forged SAE1045 housings. Every fit surface is CNC machined for precision fit and finish. Tie rod style units are sealed with specially-designed CR-rubber boots for ultimate durability. BUILT FOR PROFESSIONALS. There's a reason why the most well-respected performance suspension brands use Proforged products we're fanatical about quality, performance, and durability