The adjustability allows you to dial in pinion angle for increased traction with reduced NVH. BMRs spherical bearing offers tons of articulation for great handling, whiles remaining strong enough to stand up to high loads of any performance environment. These are the perfect upgrade for the enthusiast looking for max performance at an affordable price. When performance is a must, rely on BMR's suspension!BMR's suspensions UTCA033 on-car adjustable spherical upper control arm is available in red and black hammertone powdercoat for long-lasting good looks. Installation time is about 2-3 hours. Proudly made in the U.S.A.BMR's UTCA033 Upper Control Arm blows the competition away with superior features, strength, durability and functionality. Where most competitors use 3/4" diameter adjusters, the BMR control arm has a huge CNC machined 1-1/8" double adjuster which allows on-car adjustability. Don't let the size fool you though, we keep this adjuster light by boring out the center. The result is a 34% larger adjuster that weighs only 4 ounces more than typical 3/4" adjusters used by the competition.Where most available control arms come with a standard 3/4" rod end, BMR uses a a huge 1" spherical bearing for the front mount, housed inside a CNC machined cup. Standard 3/4" chrome moly rod ends are load rated at 28,000 lbs. while our 1" spherical bearing has an overkill rating of 90,000 lbs.! We also use bearing spacers machined from bulletproof 7075 aircraft spec aluminum to keep overall weight down without compromising strength.