Trail-Gear Magnum knuckle studs are stronger then any other stock replacement Toyota knuckle stud on the market. These heavy-duty studs are manufactured to our specifications by world-renowned bolt manufacturer ARP (Automotive Race Products). Each stud is made from super tough, ARP 2000 material and is hardened to 220,000 PSI. Magnum studs are .250 (1/4”) longer than stock to accommodate all aftermarket steering arms. Each stud features an integrated 8mm hex head for easy removal with common tools you probably already carry in your tool bag. DonÂ’t let knuckle stud failure ruin your day; get the best, Trail-Gear Magnum knuckle studs. We recommend using Locktight on the lower threads when installing knuckle studs. Studs should be tightened to 20-25 ft-lbs in the knuckles. Stud nuts should be tightened to 80 – 100 ft-lbs.