+2 vs +3 in the rear sprocket. Help me decide.... | GTAMotorcycle.com

+2 vs +3 in the rear sprocket. Help me decide....

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torontoZX6R

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So I'm on a 2007 zx6r and can't seem to decide on whether to go up +2 vs +3 in the rear sprocket (keeping front stock)

I am seeking more low end power, but do not want to be revving at 12k rpm during highway riding either.



Do you guys think going +3 in the rear sprocket will kill my highway riding? or will it be a happy medium? Should I go +2 just to be safe?

Anyone running either of these setups?
 
check out gearingcommander.com, this will show you your speed vs rpm when you make gear changes. put all your info in and you'll be able to calculate +2 vs +3
 
According to the above site, with stock gearing you're at 6800 rpm at 121km/h

With +2 you're at 7100 at 121km/h

And with +3 you're at 7250 at 121km/h
 
torontoZX6R said:
So I'm on a 2007 zx6r and can't seem to decide on whether to go up +2 vs +3 in the rear sprocket (keeping front stock)

I am seeking more low end power, but do not want to be revving at 12k rpm during highway riding either.



Do you guys think going +3 in the rear sprocket will kill my highway riding? or will it be a happy medium? Should I go +2 just to be safe?

Anyone running either of these setups?
Click to expand...
Most people do a -1/+2 on your bike, if you were leaving the front sprocket stock, that'd be a +5 rear for the same gearing!! So +2 or +3 is nothing serious.

How many KM's on your current chain/sprockets?

-Jamie M.
 
Go stock front and +3 rear.

It will throw off your speedo and bike will rev higher on the hwy.
 
With plus three you will definately need a longer chain. Plus 2 maybe not.
Thats why up 1 or 2 in the rear and down one in the front is so popular.....dont need a longer chain.
 
If your going to go +3, just go down 1 in the front and you can use the stock cahin for sure.

As TAFB mentioned -1 in the front is around the same as +3 in the back.
 
Shoot, don't mean to threadjack, but I ordered a +2 rear sprocket for my K7 gsxr600. +3 came in and thought nothing of it. Going to install over the next few days and didnt' think of needing extra links. Thank god!! Stock is 114 and I bought a 120 chain, I should be good with adding 1 extra link? (I did not change the teeth # on the front sprocket, though I bought a new one)
 
toysareforboys said:
Most people do a -1/+2 on your bike, if you were leaving the front sprocket stock, that'd be a +5 rear for the same gearing!! So +2 or +3 is nothing serious.

How many KM's on your current chain/sprockets?

-Jamie M.
Click to expand...

I know, everyone and their grandma does a -1/+2 on my bike. But from what ive read it just kills highway riding. And I plan on doing a long distance trip here and there. Thats why I thought going +2 or +3 would be a good middle ground.

There is over 20,000kms on my current chain and sprocket i believe.

I dont think I NEED to change them yet so Im not sure if I should just save a lot of money and just go -1 in the front. Damn, this really is a hard decision....

Does -1 in the front sprocket give the EXACT same effect as +2/+3 in the rear?

Thnx for the input guys
 
Hey guys I want to have big muscles but don't want to be going to the gym all the time. Any ideas?
 
torontoZX6R said:
Does -1 in the front sprocket give the EXACT same effect as +2/+3 in the rear?

Thnx for the input guys
Click to expand...


Depends what your stock sprockets are. If they are 15/45 then yes -1F = +3R.

Go to the gearing commander site given in the first response and you can get almost all your answers plus more.
 
kellen said:
Hey guys I want to have big muscles but don't want to be going to the gym all the time. Any ideas?
Click to expand...
Work out at home instead of at the gym.
 
Changing sprockets and keeping the same chain (a bit of a no-no) BUT....depends on how many links the chain has as well as where it on the axle is on the swing arm.

I have gone +3 in the back with no issues, but -1+2 would be very safe.

However! the smaller the front sprocket = the quicker the chain will wear away. If you want long chain life, always try to go with the largest front spocket you can run - the chain does not have to bend around as much.
 
frekeyguy said:
Changing sprockets and keeping the same chain (a bit of a no-no) BUT....depends on how many links the chain has as well as where it on the axle is on the swing arm.

I have gone +3 in the back with no issues, but -1+2 would be very safe.

However! the smaller the front sprocket = the quicker the chain will wear away. If you want long chain life, always try to go with the largest front spocket you can run - the chain does not have to bend around as much.
Click to expand...

OP....I think your bike should have 15/40....05/06 636's would be running a 15/43. In case you want to go +3, I should have a bunch of 43 tooth kawi sprockets if you want to borrow it to make sure your chain will work with it.
 
frekeyguy said:
However! the smaller the front sprocket = the quicker the chain will wear away. If you want long chain life, always try to go with the largest front spocket you can run - the chain does not have to bend around as much.
Click to expand...
Plus you'll have to lube more often. Higher fling rate


Sent from my tablet using my paws
 
frekeyguy said:
OP....I think your bike should have 15/40....05/06 636's would be running a 15/43. In case you want to go +3, I should have a bunch of 43 tooth kawi sprockets if you want to borrow it to make sure your chain will work with it.
Click to expand...

I really apreciate the offer, but my bike is stock at 16/43
 
torontoZX6R said:
I know, everyone and their grandma does a -1/+2 on my bike. But from what ive read it just kills highway riding. And I plan on doing a long distance trip here and there. Thats why I thought going +2 or +3 would be a good middle ground.

There is over 20,000kms on my current chain and sprocket i believe.

I dont think I NEED to change them yet so Im not sure if I should just save a lot of money and just go -1 in the front. Damn, this really is a hard decision....

Does -1 in the front sprocket give the EXACT same effect as +2/+3 in the rear?

Thnx for the input guys
Click to expand...
On your bike a -1 in the front is the same as a +2.873 so almost identical to a +3.

If you have the stock exhaust a -1/+2 won't be much more annoying on the highway.

If your chain has 20k on it I would highly suggest AGAINST using it with your new sprocket(s).

I'd recommend you pick up this kit instead: http://www.superbikesupply.com/mm5/...awasaki&Category_Code=520-conversion-kawasaki

Looks like this when installed:

IMG_5003.jpg


-Jamie M.
 
So I have decided to go up +3 in the rear. Thank you for all your input

Now I only have to decide what color chain....I can't decide whether or not a red chain would look sick on my red bike or would just be tacky

So many decisions.....
 
torontoZX6R said:
Now I only have to decide what color chain....I can't decide whether or not a red chain would look sick on my red bike or would just be tacky
Click to expand...
I've seen it in person, I think it looks amazing :)

p105030434-5.jpg


The red is more of a bright/light red. I believe they were coming out with a cherry red metallic chain, looked awesome from the pre-production pics.

-Jamie M.
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