Whether doing a complete suspension upgrade, eliminating the overly-compliant rubber thrust arm bushings that lead to unpredictable camber changes, or searching for more range of adjustment for your suspension, STOMSKI RACING's Adjustable Thrust Arm Bushings are the answer to your needs. Installing these high quality 6061 aluminum anodized bushings will provide better feedback and handling without leading to unwanted road noise on either your dedicated track car or daily driver. By upgrading to STOMSKI RACING's Adjustable Thrust Arm Bushings for all four control arms on your car, unwanted suspension changes caused by the stock flexible bushings will be a thing of the past, and thus your lap times will decrease as your handling increases. Available for the 996/997, Boxster, and Cayman. Sold as ONE set of TWO halves. FOUR sets needed per car.