Just changed out the OEM suspension for Ikon fork springs and shocks - huge improvement for AUD$770. Not a lot of other things added to it; Power Commander, Airfilter goodies from Hitchcocks, reverse cone muffler, LED lighting to lessen the load on the alternator, fork pre-load adjusters, narrower clip-ons, shin shredder foot pegs from Hitchcocks, Bridgestone BT45's -140/70 rear to give it a little more rounded profile and lowered the front by 5mm because I know how to work steering geometry. The Ikon fork springs are much longer (and better) than the OEM so the spacer length requires reducing.
I am 72kg all kitted up and the bike works great for me! Enjoy the pics.