2011 vs 2012 570

Look at bottom of this page at Difference USA FE 390 2009 2010 2011 2012 15/03/2012 by ninayu61

Black or yellow frame. That's it.

The closed cartridge fork came in -11.

Depends on what you want to do with the motard. If it's just cruising along having some fun on the streets I guess you can do like most of my friends and stick to the oem suspension. I have a race-tuned suspension setup on mine and the bike is much lower and stiffer and I really like it that way. I was a bit lucky (boring story) so I ended up with Öhlins forks that was converted into motard racing by Öhlins for me for an ok price, and the dealer converted my WP shock

Converting back and forth can be a bit pain after some time imo ( I ended up with two ). If you have dedicated forks for the different setups it's much faster. Then you just slide out the forks with wheel and brake and push up the other set. If not you need to change wheel and brake and it's a bit more hazzle than just sliding up a new set into the tripple clamps.

What do you have in mind? Just wheels or suspension as well?

If want to make a FE to FS it can be expensive. If all you want is the wheels and front brake (all you really need) then just copie FS rim size 17's (easy to find tires) and widths. Crush hub rear going to be $$$$$$. your better off getting a FS and/or FE like I did. I've got a lot extra wheels and some parts. Be careful it can become a sickness but I don't care.