The GKTECH Z34 370z Front Upper Camber Arms (FUCA's) are used to adjust the front camber or caster. When you lower your car negative camber is introduced which reduces the contact patch of your tires and thus available traction. Our front upper camber arms will get this issue sorted! These arms are a direct replacement of the standard arms and allow for negative 1-7/8" (-47mm) through to plus 3/4" ( 18mm) of adjustment compared to the OEM arm. On a stock lower arm we have seen camber as low as -7.0 degrees of camber and as high as 0.7 degrees! As a completely unique design we have made it possible to adjust caster, by using stackable shims it allows you to further increase adjustment by or – 1 degree of caster. These arms have been CAD designed, FEA tested, they are laser cut from high strength steel, are TIG welded and to finish the arms off they're E-coated (electrophoresis coating) for rust prevention. The arms feature high misalignment PTFE lined rose/ heim joints, that we use in all our suspension arms, that are a common size bearing that can be found at your local bearing supplier, or if you need we do have them on the shelf. We also include dust boots to keep the bearings protected. - Adjustable on car without the need to remove the arm constantly adjusting - Lightweight design - High misalignment PTFE lined common size bearings - CNC Laser cut from high strength steel with CNC machined ends. - CAD designed, FEA tested and TIG welded - Balljoint/ Inner wheel well clearance Vehicle Compatibility: - Nissan Z34 370z - Infiniti G37