I searched the forum a week ago for this so i hope this is not a repost. It started when i wanted to grease my bearings because I knew the bike wasn't really well mentained by the previous owner... Its a 2006 450 so i'm beginning to think the bolt has never seen sunlight for almost 10 years. You know whats coming next: it's stuck I tried everything so for the people who will comment "just hit it with a hammer!" I will hit you with a hammer ! I built some kind of puller to apply a lot of force and then heating it, i sprayed a whole can of wd40 and some other non brand penetrating oil on it in 10 days. Here are some pics of my homemade press setup You can tell from the iron bending that thing is applying tons... We are now building another bigger press which is my last hope. Is there anything i can do except for an industrial press from a machine shop or something ?