They are a great bike,,do to them what you want,,rear shock,,a must,,,one tooth down on the front, they are too high geared.
Refresh the forks,,they work really well, all the usual adjustments can be made,
With the power commander , a good map you will find loads of power low down,good pulling power all the way up,,,drop 2 gears and rev it,,way hey ,,hold on,, I think the 0 to 60 and 0 to 130 will compare to sports bikes,, the sports bikes win higher up the speedo though.
I think the big let down is the sports bike saddle,,seat,,i have bought a Yamaha gel luxury seat,,====worse,,like a board,,and if you get hot your gell collects it,and then burns your arse,,i had made a over seat cover,crude but it works real real well,veryu comfy.