I use mine as a commuter/fun/weekend bike. I have no major problems with it at all, it does everything I ask of it. There are some minor niggles that are worth keeping in mind, copy paste of a post I made from another forum:
Whilst you do need to be in the right gear as long as you are not being stupid (IE 4th gear at 30MPH) then the power is there, everywhere, whenever you need it. The torque is very pronounced, it's pulls like a train and once you get it up to around 7,000 RPM it screams and has an almost second wind until you hit the redline shortly after. It will complain and you WILL know about it if you want to ride in a gear the engine is clearly not happy about.
The rear wheel can be snatchy if you do not down shift correctly, it does have a slipper clutch but you really should be downshift rev matching, especially into 1st gear.
It's eager to turn in, the lightness is very pronounced and combined with the engine braking of the big single you can ride it hard and fast on the twisties and rarely touch the brakes. It has fantastic flow when you are on the boil. That said, make sure you account for the engine breaking on the single. There is A LOT of it, be careful if you shave all your speed off with the brakes to a speed you think is appropriate for a corner and THEN let engine braking do some as well, you will be going slower than you thought
Rear ABS is a little too sensitive. Cuts in a little early in my opinion. However, if you want to be 110% hooligan you can turn it off from the clocks. Saying that though, it stops very well.
It's a big single, even with the brand new LC4 refinements it vibrates. Not enough to annoy but enough to make the mirrors questionably useful at certain speeds/RPM
You NEED to swap out the stock exhaust. It's just not loud enough at stock. I was very tempted by the full system but I was told it was, and I quote, "Obnoxiously Loud". While that sounds attractive, I commute....sometimes at 6am. Neighbours would kill me. Akra without baffle is fine.
Niggles I have had - Rear brake lever is far far too high in stock configuration. It's so high you have to physically lift your leg to get a toe on the claw. There is a degree of adjustment built in, mine is JUST about right on the upper end of adjustment with the foot pegs inverted. Foot peg lift combined with brake lever lowering is just about comfortable.
Same on the other side, little bit too much of a gap between shift lever and foot peg, inverted foot peg is comfortable however. The shift lever does have some degree of adjustment also but I did not need to go that far.
LC4 Engine has a habit of stalling infrequently. Usually when pulling up hard at a junction. I think it's because the big single is so sensitive to any kind of load without applying some juice. If you are a millisecond too late clutching in then it stalls it. In-fact, I stalled it today pushing it backwards in neutral with the clutch out, shrug. It is a rare occurrence though.
When mine is out of warranty there is a plug-in fuelling adjustment module that one of the Australian (I think?) owners produces that I intend to install. To comply to EU whatever it is the bike runs a bit lean when not WOT. The plug in fixes that.
Oh, one other thing - watch out for the paintwork on the frame by the shift lever. Mine was started to wear away very very quickly. I've put some of that 3M anti stone chip sticky plastic on the frame to stop the paintwork being marred. I've started to wear even through that at 6,500 Miles though, needs replacing again! (Might be because of my boots, but be wary)
Otherwise, go for it!
tl;dr It's fun, it's got a shed load of character, it will commute fine, it will hooligan fine, it's slightly different and will not bankrupt you. Having just posted this post...I now want to go ride it - If that's not enough of an endorsement for it then I do not know what is
Mine has had a tail tidy, akra can, crash bars, rear swingarm/front fork sliders and an uprated H4 bulb (which is weedy on dipped at stock
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