I hope I'm not re-posting but Rekluse just made a bunch of old stuff which included LC4/640 clutches. I got one to put in my '02 Adv. Call them if you're interested or pm me if u want to save some $...
2015 Harley Ultra Limited
2013 350 EXC-F (Wife's)
2008 530 EXC-R/2008 Beta Rev4T
2006 950 Adv S/2002 640 Adv/1970 Yamaha RT1