Am sorry i if i was not clear. I meant i was riding in 6th gear @5k rmp i was doing 74km/hr. Then @ 7k rpm i was doing 100km/hr. Then @ around 8-8.3k rpm bike was doing 108-110km/hr. And i could not pull the acclerate any more.
This is wt i have noticed so far.
1 gear @4k rpm - 20km/hr.
2 gear @4k rmp - 34km/hr
3 gear @4k rmp - don`t remem
4 gear @4k rmp - don`t remem
5 gear @5k rmp - 64km/hr
6 gear @5k rmp - 74km/hr
6 gear @7k rpm - 100km/hr
6 gear @8-8.3k rpm - 108 km/hr
could not accelerate any more

you have to downshift and use the remaining power which was unused in the 3rd ,4th gear gears and then you can acheive the top speed

really ? No offonce i don`t thing u understood wt i was saying.

if that was not the thing,yes i have not understood what you said
i did not read any previous posts

Wt i mean is my brand new R15 v2 `s top speed is 112km/hr. I was trying to explaing when she gets a wt speed above. Can any of your guy share your top speeds with me ? and any reasons why this is happening ?

Shift from 4th to 5th at 9k rpm. Do the same when shifting from 5th to 6th. That is how this bike is. If you shift into 6th at 5k rpm, you are riding it wrong!!!

i dont own a r15 but friend has r15 and he has done 130 kms on it
and brand new tells me that the bike is in runin period so keep the tacho reading below 4k rpm for first 1000kms or as suggetsed.
r15 v2 spec says 17bhp@8,500 rpm so you have to change each gear at 8,500rpm to achieve the top speed
if this is not you are looking for,then you have not made yourself clear

@Himanshu : I don't own R15 mate, but I guess you are pointing out that the top speed you achieve(d) is like 112 KMPH @8.5K RPM and that it takes a lot of time to reach there. Also, you can't accelerate beyond that even if the throttle is fully opened/twisted?

Achieving top speed doesn't really depend on the RPM at which you change the gears as far as my experience says. I own a P150 and clocked a speedo indicated 123 KMPH with a hint of crossing the redline set at 9K RPM. I have tried two times and both times I didn't go insane on throttle. I gently twist the throttle and it propels linearly. The only difference you get on revving up the bike and trying to achieve top speed is you get there in less time than sane throttle input. For Eg: Suppose your bike's top speed is 1xx KMPH. Now, when you revv the engine hard in each gear you may reach the top speed in say, 25 seconds. Now, when you go sane and gently increase the throttle, you will achieve the same 1xx KMPH in more time, say 30-35 seconds. Also, it will take long distance to attain top speed by this sane throttle input method.

The engine is built to attain its peak power and torque figures at a particular RPM no matter how you reach that RPM level. To propel you forward, yo ueed torque, so the ideal situation is to use the max torque figure to shift the initial set of gears, say 1-2-3 and use the max power output zone/RPM level to get you to power band and attain top speed. Remember, torque is used to accelerate and power is used to attain speed.

I may be corrected here, but this is what I believe to be true, it need not be true. Experts can explain if the above explanation is false.

By the way,

1. How many servicings have you done?
2. What's the odometer reading?
3. How old is the oil and has the air filter cleaned?
4. Are the wheels rotating freely?
5. Did you lean on the tank to minimize wind resistance?
6. Did you check the air pressure of the tyres?

dude chill. its simple. you didnt utilize the power of the bike in the beginning to get to the top speed. now you were rising the speed of the bike gradually so now it makes sense. if your runnin period is over then i suggest this, and this is what i do if i want to test the top speed.

1. get out of town! ye su read it correctly. get to a highway where there are hardly any living soul on the road.
2. get the bike going when its around 5k { i am talking about the launching of the bike}
3. change to 2nd gear around 7k or 8k rpm
4. change to 3rd around 9k and change the remaining gears at 10k rpm exactly.
5. now at 6th gear and around 9k rpm you bike ll be a bit constant on the speed. if you are luck to get a little slope road and less cross winds then i am sure you will reach 140kmph on odo. provided you are not more then 60kg :P

PS: i am 56kgs :P have done 150kmph on odo numerous times and 140 is a piece of cake. and yes, dont ignore my first point.

@Ron and @Akash
Thanx for your help guys.
As i said this was my first service. RIght now odo reads 933 kms. No i did not lean on the tank. Oil and Oil filter was cleaned hardly 50 kms back.


Wt bothers me is, my 6 years old CBZ-X no matter when i change gear, if i am on 5th gear and past 9k rpm, am doing 110km/hr. On my brand new 1.25lakh bike i cannot event touch 113km/hr mark. Their has to be something wrong with the engine

The simple thing is you need to know how the bike accelerates. This bike is different from others. Many of us who have tamed her sees your top speed in as early as 4th gear. So, study her, dont always fully twist the throttle till the end, give her a change to make her up to the power band and bang, there you go!!
Remember, fly safe !!

Buddy, this is too early to record to speed of your baby R1. The bike has not even crossed 1000kms mark and according to the manual, you haven't finished your run-in. Don't attempt top speed, high-RPM run before you cross the manufacturer recommended run-in. Have patience mate, you may ruin the bike if you attempt this high speed runs more often. The internal components of the engine/transmission have hardly set in, be patient till your third free servicing, let it open gently. This is the reason your bike isn't achieving the 130+ KMPH marks. @Owners can corrent me if I am wrong. As far as I know, your oil and oil filter have to be changed in the first servicing per manual recommendations. I see that you have mentioned they have been cleaned and not replaced. Don't worry if your bike isn't doing as good as those who have done a proper run-in and have a couple of thousands of kms under their belt/odo. You too will reach that point.

I do not own a R15, and might be wrong here...
But if you want to get higher speed, the try shifting at higher Rpms in higher gears i.e shift at 6-7k in 4th and at 8-9k in 5th gear.

Also complete the Full Run-in to measure up the top speed of your bike. Have patience

AM sorry they did cahnged oil/oil filter in first service too.
And people are contradicting here. 1 says that i was worng not to take her on high rpms early on (Ron) and 1 says that i should follow proper break in period (Akash). Totally confused

Bro sometimes I wonder how much a R15 can do without a rider. 150kmph is just insane for a 150cc and thats why I respect this child of a R1