Only DOT4 changed braking power this much im going for it please suggest a brand for good dot4 liquid..

Check battery voltage with ignition in OFF position...it should be 12.2~12.5..start the engine and measure voltage across battery again..it should be 13.5 to 14.5. If this is Ok then your charging system is functioning well..If battery shows less than 11.5 at rest and goes up to 14.5 with engine at 2K RPM then suspect battery to be either low on charge or battery going Kaput..
If all this checks out , then check your connectors at the Ignition switch,display panel and fuse unit.

Glad my suggestion helped,the credit actually goes to Aargee for doing the change,and sharing it here...Now you can drive with more confidence on your brakes....Why change of master cylinder ? was there any issue ?
If you are on Conti tires and it is near bald, be very careful of front braking,since it will skid...

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After few months of ownership my front brakes tends to be more spongy than other CBR250R's(STD) which I checked. I took it to many SVC's to solve this issue. Have done bleeding also, it will be fine for 2-3 days again it will be spongy. The rate of sponginess is like if you pull the front brake lever it will ALMOST touch the hand grip. it was too much... Atlast when I took it to Saphire SVC in Bglr the mechanic told me to replace the master cylinder, unfortunately it wasn't available.
Couple of weeks before I met with a small accident which caused the master cylinder to break. Anywhere it wasn't available, atlast found one in TVM-Kerala. When I rode today under city riding speeds I found the rear break is more than enough to stop the bike(even I am using the P220's rear brake pads). I used to apply the front brake using 3 fingers(I learned that habit coz the front brake lever play was too high which isn't possible to stop the bike by applying with 2 fingers). Now if you apply with 3 fingers it makes me scary, its much responsive. Need to go back to the 2 finger operation. The front tyre is almost bald as it has done 23K+ kms , need to change it ASAP...

Did my 24X7 service today at 8030 km. Mileage wise it is pretty less than what many of you out there at same third service, but official commitments and the damning rains.....
Any way its been wonderful year with her. No problem at all, though it is from the first batch of CBR.
Today after service when I was taking delivery noticed a peculiar sound, it is not shim problem ( the mechanic as well as the senior service manager confirmed n I too believe it to be so) when the bike is idling with engine cold there is a irregular khat khat sound from the head area, it is there at times, at times it is not there. At higher RPM it is not there or may be is there but not audible due to higher noise level. Mechanic told it is not shim related as in that case it would be a regular / rhythmic sound which it is not. Same confirmed by the supervisor.
They suspect the cam roller bearing to be damaged, which is not in stock. So after arranging the same they will open the head of my Baby.
Has anyone faced this problem? Apart from the sound there is no other problem in the bike viz acceleration, to speed etc. The sound doesn't come after the engine gets warmed up.
What can it be??????

Over all I am happy.


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From what I have seen, most master cylinders are same in size, piston dia etc.,...another member had used a P180 master cylinder in a ZMA without issues....the only issue will be matching Banjo bolts of the master cylinder to brake hose connection.
All Type of brake fluid is to be changed at 15,000 Kms or one year which ever occurs earlier...this is for continued good braking and is safety related...Replacement of entire front brake fluid will not be more than 200ml, but the safety and confidence it gives is priceless.

Are you talking about the moment you start the bike there is noise and after say 3 to 5secs the sound just diappear like it was nothing??

When the engine is cold & idling at lower RPM, less than 1250 this sound may be heard , and this is due to the lean AFR..as engine warms up , the lean AF mix is getting burnt fully with the increased temperature of the engine,and engine produces enough power to keep turning without hesitation, which is why at cold start up there is hesitation ...Nothing to worry since all other engine parameters are good.

No, it doesn't go after 4 or 5 sec, it is there till the engine is properly warmed up, something like 5 or 10 km of hard riding. After starring it may or may not be there, but if you rev the engine to say 5 or 6 k and then let the engine idle it comes and this is also not sure, I mean the sound may not come. I had heard this before also, but had ignored as it used to go of after a while. But today when the mech hard it and said the idling sound is not smooth it struck me.

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I agree and had initially ignored due to this same reason but it is a typical metal to metal hitting sound, so a little worried.
Although rest every parameter is normal.

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Well in my case the moment i am starting the engine there is a noise .. I am NOT getting the source of the noise as it is there only for very short period of time. And it sounds like the plastic is rubbing with the plastic only . And it has happened only 3 to 4 times only . So no point in rushing to SVC also..

guess when the ASC opens the engine we will know....

No actually I was also ignoring this, but today after my interaction with the Mechanic and the supervisor I am a lil worried.

Sir, Plz declare the timings and place..

Also I recieved a call from Surya Honda Poonamallee. They said something about CBR250R meet up at surya honda on sunday 8 am. There was too much disturbance on phone and was busy at work so couldn't understand what they were talking about. Any one else from chennai brotherhood recieved such call..?