1,000,000 MILE WARRANTY. You can install our control arm shafts 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. CRAZY STRONG CONTROL ARM SHAFTS. Proforged control arm shafts are built using some of the toughest steel on the planet. Every fit surface is CNC machined for precision fit and finish. BUILT FOR PROFESSIONALS. There's a reason why the most well-respected performance suspension brands use Proforged control arm shafts we're fanatical about quality, performance, and durability. Professionals save time and money with our competitively-priced products that outlast inferior brands. Do the job with confidence replace your worn components with the leader in performance control arm shafts Proforged. WHAT IS A CONTRO