I do own a 650GT 2006 model. It has less than 10,000 klm. Although when I looked at the Internet to see comments, they were positive about the Comet 650, I'm not so happy with it. I had to replace the rectifier few weeks ago (it cost 200 Euro) and after the dynamo that charges the battery failed. (another 200 Euro).
So I decided to fixed and sell it and get myself a HONDA.
I have found this bike to be very reliable, much more so than my Honda. My Honda has broken down numerous times, and I have 9000 on my 09 Comet. I found it was lumpy before warming up, and I had to do a full service myself before taking it out on proper rides. However, after my first 4k it rides like a dream, sounds like a dream, with my adapted twin cans sounds lovely.
I bought an 2008 belly pan from a ruined GT650R looks fantastic, not had any problem up to press, and I ride well in excess of 70mph and it's fine, ridden solid for 5 hours, and in the rain no less.
I think that most comments online are bad, because nobody writes about their good experiences.
Fantastic buy for price, with a year warranty and bonus of 3 years without MOT, much better than buying a Suzuki SV second hand, as that will cost you more in the long run.
I own a Hyosung GV250 and found the side-stand kill-switch to the culprit (slight vibration can make it stick in the off state). Either replace the switch or short circuit (which is what I've done) and problem will go away forever.
Seems to be a common problem.
Try engine braking down to a lower gear, this will give the engine time to catch up.
Have a Comet 250 and had same issues. It was the side stand switch. Replaced it, and no further issues, but did keep the old switch and made a jumper out of it, so if it happened again, I could bypass the side stand switch and keep riding. Suzuki uses similar switches on some of their bikes, and they may be better quality.
I have a 2008 Hyosung 650, and I have had nothing but problems with this thing.
One month after getting it from the dealer, I had the same problem where the bike just died and there was no power. They picked it up and fixed it (replaced a coil that is bolted the frame). Got it back, and while on a ride, my colleague noticed that one of my brake calipers on the front forks was only grabbing half of the disc. Called them up, and they tell me it's common and there is no issue, as it is a manufacturing process. Yeah right! AS if.
I also noticed that the bike does not corner very well at high speeds, and this is because they have the forks shortened by having them mounted high. I took it back again, and once again the dealer agreed and adjusted them for me.
Anyway, all was good until today, when the hazards started to flash continuously.
This bike looks good, but it's an embarrassment to the concept, and to the Australian authorities who do not regulate standards, I have had the bike for three 3 years now, and just like a lot of the posts, there has been nothing but misery, and furthermore, I would not buy a bike from these guys ever again, and if I am asked about it, I am honest, and don't hesitate to let everybody know how unsafe and cheaply they are made.
Hi from Melbourne, Australia.
I too have a 2010 Hyosung GT650R.
My battery recently went dead, and after charging it, it pretty much went dead within a few hours, so I replaced the battery, only to have the same thing happen.
So I had it tested, and it turned out to be a faulty regulator. When I replaced the regulator, I discovered that the plug that the regulator plugs into had burnt out. So I rewired the plug, and put it all back together, and it seemed to be working fine.
A day later my F.I. light... fault indicator came on, however I didn't think much of it at the time. 2 to 3 days later, I was facing the same problem. My battery is dead again and the regulator isn't working, and the plug that the regulator plugs into is burnt out again.
Have I missed something???
Other than the problem I'm facing at the moment, I haven't had a problem with the bike. But many people I've spoken to have said Hyosung has always been notorious with the electrics on their motorcycles.
After doing a lot of research, I've found a fair few that are experiencing similar problems. And it is a shame, because Hyosungs seem to be a pretty good bike to ride and to look at.
I hope someone can solve my problem.