dude what r u talking abt????
mine and many other uni owners touched 120 on their stock uni's
my steed did a 49 k and with some minor mod's(head,syn's,ngk platinums,etc) i'm able to go to 122 with a thin person in my back seat and touched 124 (drag position)
my uni does not give any respect to the triple digits..goes to 110 like it's child play...
and after that can feel the engine starting to put some effort...
but brakes r a very big concern at that speeds(120+)...
bro,just imagine a busa's or any sbk owners pride when he can go past 120 in his 2nd gear while we'll be beating the shit out of our engines...

Sounds great... congrats buddy

RTR 160 can reach 130kmph on the speedo... and the FI can probably hit 135kmph on the speedo. Don't know how much the error will be though.

Anyone knows how to check if there's any error in the speedo reported speed?

Well maybe as this is the first time I actually drove a bike at that speed I sound elated. Its not at how ease the bike was on 111, in that scenario as I said GS was not dropping a single sweat, was going with absolute ease......and I am sure its gonna touch 120 may be more....but who drives these 150sss at that speed man....it crazy....yea I know busa goes like 300km/h but people driving at that speed are heavily guarded plus the deacceletation of bikes like busa is in seconds from 300, to 10......

Any way I'd try to put the bike on its top speed and will report......

can/will/prpbably reach is different...any body actually tested/drove RTR/FZ at 120/130 is what I need to know, the honest/true feed back is what I need to hear of how these bikes are at that speed if they even reach there.

My friend has logged 130kmph as the hi-speed in his RTR Refresh. So thats the only thing I can tell for sure.

Sam, be careful. Don't just push your bike for top speed check. Give it some more time and ride sane & safe.

FYI, most 150cc bikes can reach 110 KMPH either easily or with some effort. Some even cross them But the point is, like you said, there's no need to push them so far and as DoGg said, brakes are a serious problem.

Take care.

Apart from the mileage (I got around 35 kmpl when doing 105 kmph on my GS) when you push your 150cc bike that hard, safety is a major concern. On completely empty stretches with near perfect road it seems okay. Riding at 7000+ rpm for long durations on our GSs, Pulsars, Unicorns is, I think, very bad for the engine life.

Could someone enlighten me on the optimum speed one should maintain on highways with a reasonable tradeoff between speed and mileage.

There is thread on ideal speed of 150cc bike. Just search around. I think it should be around 85-90 kmph or at the most 100 kmph. Some times above that is ok in case you want to test the limits of your bike.

My friend claims he achieved 125kmph speedo on his FZ16. But I doubt GS150R will go that high due to its heavy curb mass. Though Im not sure, somebody pls enlighten this.

it's not at all possible......
may be he was doin it on a super slope or his speedo is super corrupted........

i touched 126 on my FI without the drag sitting....
my frnd has done 135 on speedo with drag effects on stretch...

it'll hit 140 on slight slope easily......

Sure its just a test run, no way I am gonna drive at that speed, thats what I am trying so say in my above posts as well, may be the top speed of bike is 115+ but who drives at that speed, even if the bike is equiped you are not. There really is a serious risk.
And as @Nawab said driving constantly at that speed must definately be bad for engine life......I think 90-95 is the best for these bikes and anyhow GS glides at 90, smooth as silk......go for 100 at the max if you are kinda on a long run........and I think 100 should satisfy most of the people's speed hunger.......

I have been constantly watching this thread and read almost all posts. So as i'm planning for a new bike, thinking about GS seriously. Finally i managed to visit showroom and have test ride y'day keeping aside all my office work
In the showroom I was welcomed by a orange color GS.. followed by a blue and gray one. I got a gray bike for a test ride...
just sat on the bike... amazed.. feels completely different when you sit on it... ride the bike to believe me.. big bike feeling...its a wow factor
pushed the start button nothing happened.. then the showroom guy told to hold the clutch to start the bike.. here it starts.. absolutely vibration and sound less .. put the bike on first gear show room guy explained it has six gears and excitedly showed the gear indicator in the console. ok, all is fine.. i started and bike maintianed its vibrationless and soudless nature further.. saw at the console it was showing 0kmph.. then realized they have disconnected the cable
went with the bike without helmet and has been told not to go too far as there were polices everywhere
Pick up was in par with my pulsar150...(GS's little better infact).. bike's silk smooth engine was fantastic... and it mainted the smoothness upto 7k rpm, thats the limit i tried on that test bike. Totally bolded by the smoothness of engine and gear system, i have even tried unicorn but my feeling is GS's engine is much more smoother than uni's.
I completed my test ride and parked bike again back in the company's parking lot with smile on my face. The showroom guy was smart enough to notice my smile and started asking me when can i book the vehicle, and even insisted me to book on the same day as tne next morning was a national holiday and RTO office will be closed... smart indeed
But i got a question in my mind, when i took my pulsar 150cc to my home from showroom way back in 2005, i really liked the summm..... sound from the engine; i'm lucky enough that my pulsar is still maintined the sound.
Is it really necessary to minimize the sound of the bike?
The bike's sound is its identity... thats what i feel

But take the same factor Honda engines are meant to be soundless and now its suzuki....thats technology - and for those who want a buttersmooth ride........

GSR is much smoother and rather a powerfull then UNI......

hmmm... generally, vibes are a by-product of sound... the more refined the engine is the lesser the vibes are... unless tuned for an exhaust note...

OT: What is meant by "refinement of engine" ? As far as I know when sound is less, vibes are lesser, then only engine is more refined (?)