Thanks for your answer. I used a rubber hammer to check where the noise is coming from and the only thing that makes metal-to-metal clunk noise are the spring. I have fox racing shocks with 2 inch aluminum spring spacer at the top. I thought of trying to add at the bottom of the springs super pro polyurethane base/isolator.What id do is start by oiling it.. if it doesn't work you can try disassembling it and stuff it with grease. Also it might just be an unscrewed nut or something.. just make sure to check everything