lol @ weight of the disc!! try riding another cbz to see how it feels.i hope the right oil and quantity was used when you replaced the fork oil. could be the springs need replacement but i doubt it since uve done just 13k kms. I suggest you show it to a different mech who is comfortable working on forks and get the cone set checked too while you are at it.

hmmm.. will have to find out with a different cbz.

i am thinking of replacing the air filter. any idea how much it could cost ? i am happy with stock filters. Dont want to add any high performace airfilter.

Are you sure the mechanic had put new oil?
The mechanic would've changed the oil seal to stop the oil leak, but didn't change oil?
Because, you will immediately feel the difference if new oil is put and the service is properly done.

Saurabh's XTreme is double disk / single disk? I hope there is no confusion

Yeah mechanic had put new oil , right in front of me . I had purchased the oil seal and oil from hero showroom and then given it to the mechanic

got 20W40 for 240/- and 15W50 is around 270 something.

I already bought that 3000 4T plus (20W40) and literally 'just' poured it into my extreme and brought it back from the SVC.
What do you say now... should I immediately replace it or waiting another 3000 kms till next service won't cause much harm??
Btw Aneesh@4GHz (senior member) said 20W40 would be fine

I'm quite unsure about it, because yesterday while searching for NGK G Power and Motul, I went to the authorised spare part dealer to check what brand plugs Hero provides, they said Champion... no NGK.
Anyway whichever it may be I'll go for it....

waiting for it....

Had your bike fallen down recently?
Coz, if the the forks get twisted in the T-stem, they will not work properly.

20W40 will not do any harm to your engine, wait for around 2k kms before you change.
I've seen 20W40 being recommended by many senior members sometime before in this thread itself, they say it would make your gears and engine smooth. But I haven't tried it yet personally.
They say Hero now recommends 10W30 for improved mileage.
IIRC, Hero was recommending 20W40 to Karizma in the beginning and later they changed it to 10W30.

No, harm in using 20W 40, but your mileage will decrease by almost 7-8 kpl and the engine will feel lazy to rev. You can use for 2k and change to 10W 30 of good brand.
There are two suppliers to hero honda. they are NGK and CHAMPION. Champion is a good plug and is made by FEDERAL MOGUL. So there is no problem. I use champion in my joy and its performance is quite good and last longer than NGK.
Yes Karizma recommended grade is 20W 40 and hero honda later changed to 10W 30 without changing anything. In karizma if you change to 20W 40 then nothing much difference is observed except smoothness and nothing else.
But in core series engine like extreme/hunk and super splendor/glamor using 20W 40 makes the bike lazy and decreases mileage.
I had already experimented on my extreme.
What i did was drain out the old 10W 30 oil and filled motul 20W 40. Immediately the bike felt smooth but the engine felt lazy to rev. But i continued to test and the mileage decreased by 7-8 kpl. Before it was showing 55 - 58 kpl in city and 62-65 kpl on highway. But now it showed 45-48 kpl in city and 55-58 kpl in highway. After 500 km without fiddling with anything i changed to 10W 30 and immediately the mileage returned to old.
Using 20W 40 felt like unicorn but after using 10W 30 again the extreme pull returned.

Yes! It has a huge noticeable difference. My bike was already one of the smoothest of all extremes, but now it's even smoother.

You are one of them (senior members)!

Nope , no accidents at all !! touch wood

An update

Guys yesterday i cleaned the chain and sprocket of my extreme by opening and cleaning. DIY thread coming soon.
As you know extreme is quite short geared, so i changed the front sprocket to unicorn 15 teeth and presently haven't ridden much but have ridden in the colony.
Mine is the digital model, so as it shares the sensor and wheels with ZMR, so the speedo is accurate as a ZMR. So i will tell the speed difference to what i have tested.
RPM IN FIFTH GEAR-------stock speed-----------15 TEETH speed
3k RPM-------------------38 kph -----------------42 kph
4k RPM-------------------53 kph------------------57 kph
I haven't tested beyond this. The bike has become smoother and also revs smoothly. Wait for a complete review after i ride on the HIGHWAY.

God only knows

sorry bro i didnt mention the pads life in my post - it comes to 6-7k kms but i change pads at that interval only - it only costs like 150 bucks and i dont take risks when it comes to brakes - once i didnt change the pads /clean it for a long time and it almost got me killed .

eh no dont ever go for 50w grade oil .

Yeah i was told the first one was driver negligence and am pretty sure they were not drunk when that happened .

Ok sir will do like you said only after 1K also will get a gauge and get the tappets set correctly after the run in .

wow i didnt know you can do this . how much is the uni. sprocket ? waiting for your review .

Sibun ji thats what this thread needs LOTS and LOTS of DIY stuff

What do you mean by you can do this.
The UNI sprocket is of a company named JYOTI and cost me Rs.55. If you can go for original will cost you Rs. 80 and you will absolutely love it.
All Hunk/ extreme owners try UNI front sprocket and see the difference.
Hero increased the power of the engine but shortened the final drive ratio as a result bike used to easily red line and felt the need of sixth gear. But by changing to UNI sprocket the bike now feels as if it is geared properly and doesn't require sixth gear.

That's great news! I always wanted to do sprocketing, because I always found myself looking for a 6th Gear. but only other option available was the Karizma's rear sprocket. Looks like there's a better option available now. But what about the low end torque Sibun? The Hunk and Xtreme are known to be quick off the blocks, the acceleration is superb. I know Acceleration and Top Speed are a tradeoff, but has the low range driveability been affected due to the taller gearing?