I would be going for the whole sprocket kit that include a rear, front and chain as well.
But what about the performance. You've given the theory, now let me have some practical consequences of it.

Between the 37T and 36T I would say just go 1T down, you might not like the drop in acceleration with the drop in 2T. It will be a bit too tall geared to your liking.

With the 37T you would roughly be doing about 3kmph more in every rpm. If you like the gearing of the 220 Fi then go for this.

36T wont be that bad, but you would definitely feel the drop in acceleration.

I would be going for the 36T in about 15K kms when my current chain sprocket wears out!

I read in this thread that a 1 teeth change in the front sprocket is equal to almost three teeth changes in the rear sprocket. Is it true??

If it is then I should go for a teeth change in the front because in this case I wouldnt have to change my chain which though has done 23k but the mech says it is fine.

Apart from this any other pro and con between changing the front sprocket or rear sprocket.

Would be waiting for further updates...seems to be usefull.

Can you help me with this??
I have a Hero Honda CBZ*(2006).The bike speed recently seems to have slowed down.Any possible solutions?Does using a chain spocket of Hero Honda CD 100 SS in CBZ help increase speed? I really want some more speed in my machine

There is no Harm in trying Rachit, i have personally done things,that is how i know it..
Also when it comes to change of front it needs to calculated on many things as ,
on P150 that had 14T in the front was fitted with 15T the initial accelation was far better than any same grade bike and could easily match 180cc,
but a max of 95kmph it reached,not beyond that and then ceased!

Be Careful if you are trying your own stunts!

Speed can be achieved by many things not only desprocketing the vehicle,but at the same time it should also have the capabilities to handle it,like i changed to 16T - 39T in the rear for Discover,The initial dropped abut the topend was amazing i could cover any 150c on a long run and easily overtake it also,but when it came to take a BRAKE,i got to know Discover can not stop itself at that speed,so changed it to 14-42, instead to 14-44,which is better!

thanks samarth for your reply!

I want to change my sporkets for my pulsar 150 dtsi spoked wheeled to increase the top speed / cursing speed. What set of sprokets should i put to achive it.

me too

i own a p220 fi old,want to know wat changes should i bring to the sprockets to increse my top end to cruise away pls guys i need help

Put 42T in the rear, 39 would kill it..
Or put 15T in front and then 39 of caliber in the rear if it fits..

Yeahh..!! That's the way to write it..
P220 [Puraani Waali.]

Put the Complete Chain set of the New-One!!
OT: Your Location says: U.A.E. ..... Do you ride a P220 There..?

@Rohit & Rachit: Any Updates mate..??

any suggestions for a unicorn (2008)?? i too wanne increase the cruising speeds without much stress on the engine...

Sorry for late reply. I missed the thread.

You said, 1 teeth change in front sprocket = 3 teeth changes in the rear sprocket.
Yes, It is exactly equal, ONLY if your Final Drive (Rear Spr. Teeth/ Front Spr. Teeth) = 3.
For example, in a 14/42 teeth setup.

For all other Indian setups, it is "Approximately" 3, many times. For Example, in HH ZMA, it is 14/40, which comes out to be 2.85...

Yes, you can go for a Front sprocket change to see a good difference. 23,000 kms? Well, I hope you must have changed the "chain lock" once, when it was at about 10k-15k... If not changed, do so now.

Still, Changing front spr. also reduces the costs involved, and again, Chain can be adjusted at most times.

However, expert racers and other enthusiasts prefer changing Rear Sprocket, because it gives them more choice and freedom. In other words, it allows them to make "minute" changes...

As far as possible, You should choose a similar hardness material in all Chains and Sprockets. That's because, a Softer Sprocket will wear out itself quickly, while harder one will wear out/ damage the chain...

No, There are no other major Pro's and Con's, except the ones I mentioned above.

Try using the new P220 DTSi's Rear Sprocket. I'm 90% sure it works... It has a 36 teeth setup, which will help in cruising.

--------
Guys, You can use this site to calculate Gearing Speeds, via Bike Specs:-->

Gearing Commander: Motorcycle Gearing Ratio Sprocket RPM Speed Chain Calculator

Thanks for the reply man.

I changed my rear sprocket to 38T, got a new O-ring chain.

There is a slight confusion though. I have read everywhere that Zma's front sprocket has 14T. But my mechanic(Who is very talented and experienced) said it has 13. and to my surprise it was actually 13. I counted mine's.

Now I have a 13 front and 38 rear. Speed at fixed rpm have increased by around 5-6 km/hr. Pick up is not sacrificed at all.

^ Well, I have a manual and it says 14 teeth. Let me check out my friend's ZMA to confirm this...

Taller gearing for the Yamaha FZ

Hello all!

I was wondering if we could play with the FZ's sprockets to make the gearing taller, the bike has a lot of low and mid range grunt but at higher speeds the gearing I feel resticts the top end. Experts please throw some light on this issue as to what front and rear sprocket combination can be used to make the gearing a lil taller on the FZ.

hi,
i have a doubt... does too much power transferred from the engine to the wheel lead to faster ware and tare of a sprocket....???
i'm lately having issues with my rear sprocket... i own a heavily modified P150v2 and it has a 16T front and a 42T rear... i've used this sprocket for only around 4000kms and i get weird noises from the rear sprocket... when i observed closely, the chain is clinging onto the sprocket a level once it completes a rotation... something like "tak tak tak"...