Proforged 120-10003 Greasable E-Coated Front Lower Control Arm Shaft Kit GREASABLE POLYURETHANE CONTROL ARM PIVOT SHAFTS. Proforged greasable polyurethane lower control arm pivot shafts are built using some of the toughest steel and polyurethane on the planet. Every fit surface is CNC machined for precision fit and finish. 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. BUILT FOR PROFESSIONALS. Theres a reason why the most well-respected performance suspension brands use Proforged control arm shafts - were 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 CONTROL ARM SHAFT? A control arm shaft (also known as an A-arm shaft) connects your control arm to the vehicles frame. A worn control arm shaft causes poor handling and makes it difficult or impossible to achieve an alignment, which leads to rapid tire wear. Replacing your worn control arm shafts gives a noticeable improvement in steering feel, handling, and safety. BUY WITH CONFIDENCE. Theres a reason that the most well-respected performance suspension manufacturers buy from Proforged: were the only brand of chassis parts that offers race-day performance at a price within your budget - and backs it up with a 1,000,000 mile limited warranty. Buy today and get your car, truck, or racecar back on the road and stronger than ever.