Description Street performance tubular upper a-arms add caster to improve stability and steering feel. Race Proven construction ensures crisp, precise handling. Power Tour and daily driver proven 1-1/4″ heavy-duty tubular construction – strong and light Direct bolt-in Stiffer than stock to reduce body roll and increase performance End links and chassis mount bushings included Minor drilling of a-arms required to accommodate heavy-duty end links Pair with UMI 6432 lower A-arms for ultimate handling 100% Made In the USA