ICON Vehicle Dynamics Tubular Uniball Upper Control Arm System for the 2007-UP Toyota Tundra was ultimately designed to add strength and caster on lifted applications or when used in conjuction with adjustable coil over shocks. Weak OEM ball joints present problems by limiting suspension travel potential, especially when using our 2.5” VS Series performance coil-over shocks on your truck. Our ICON tubular uniball upper control arms use 1” PTFE Lined Uniballs combined with a unique 17-4 Stainless Adapter system that increases the upper arms misalignment, increasing strength, allowing for smooth and clean wheel travel without worrying about factory ball joint bind or breakage. The ICON designed unique mounting adapter is an industry first making installation times much faster than other manufacturer's arms.; These ICON engineered arms are built not only for added strength, but also to correct alignment geometry on lifted applications. When using adjustable height coil overs or when lift kits angle the control arms at a downward angle the Tundra tends to need more caster adjustment for proper front end alignment. Our engeering built into these arms will help keep the front end aligned in the middle of the factory specs insureing good clean tire wear instead of riding the "barely aligned" specs likely to cause excessive wear on the edge of your tires. Tubular Uniball Upper Control Arms combined with a set of ICON 2.5" Series Coil Over Shocks - 58650 will give you the maximum on or off-road performance available to you.