I hate to bust your bubble, but needspeedjoe hasn't had a post in 2 years. I hope he answers for you but he probably won't. How high are you looking to get the bike? I run the stock shock and I'm 185 lb. I like it, not everybody does I understand that. Let us know a little more information , maybe we can help you. I've had Buddies who put 9 10 11 and 12 inch shocks on them, they rode very back and high. They just didn't ride as well. Are you bottoming out, and that is why you're looking for something taller?hey I am converting my MX 500 like your and I put the 9 inch shock on but didn’t lift the bike as much as yours! How did you get yours to be that high?