I have been running these for 2 years now and have had no issues. In fact I had Koni red's and they SUCKED did not even last a year. Before every body flames me for my hate on KONI I ask you this, Have you ever had a problem with a product that no one else seems to have had? Well that was me with KONI red's and both Eibach sports and crappy designed Skunk2 coil overs. (the coil overs were the ultimate death to the Koni red's)(the Eibach springs snapped due to a bubble in the coil)