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Discussion Starter · #1 ·
so im new at this gearing stuff on bikes and trying to learn... done a search but didnt really come up with the answers i was looking for.

anyways, i see a lot of people go with -1/+2 on their bikes, but ive also been told just +2 is good as well.

my goals from the new gearing would be just a little more umph around town, a little easier to pull the front wheel up in 2nd, and not changing my top speed to much....

so what would best suite me? will i need a new chain? and what brand and/or place should i buy from?

thanks guys
 

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Not to be an ass but if you did a search its covered many times over.
Im happy with my -1/+2 setup. Either way you go you will feel a huge improvement. If you want more of a good thing go -1/+2. Although you will have have better throttle control to tame the front end from comming up. Have not done a top speed but Im sure it will still do 155 MPH and thats fast enough for me. As far as ordering parts I would say www.sumofallparts.net They are nice people, stock ZX6R parts and priced well. RK GXW chains and Vortex sprockets. They will set you up.

Check this out and you will find your answers.
http://www.KawiForums.com/forum/topic.asp?TOPIC_ID=58819
 

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ordered my some of all parts -1, +2 with chain today.. thanks to your thread subhuman. Damper too with some black vortec rearsets... hehe.. let the fun begin
 

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Hey Stylin - for a one tooth change in the front, it is roughly equal to a three tooth change in the rear. That means that a +2 is two more teeth in the rear but a -1/+2 is equal to about a +5 in the rear. That is a significant change in gearing.
Stock gear ratio at 15/40 is 2.66,
+2 is 15/42 or 2.80,
-1/+2 is 14/42 or 3.00, which is the same as +5, 15/45, 3.00, and you don't have the increased chain lash of a 14/42.
Good luck.
 

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Recalibration is needed for any change. The -1 was about 15% off, the -1/+2 was 20% on my bike. I've since gone back to stock but may put the +2 back on for a little extra kick.
 

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I did a -1 +2 and I think I'm the only person that doesnt like it. I have a 04 636 and it accelerates extremely well I just lost alot of top end. At about 135mph the shift light comes on. How can I fix this? and is bad for me to run it at 135 with the shift light on.
 

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I ran into a dilemma and you may or may not but when I went -1 in the front, the noise from the sprocket being smaller sucked. So I put my stock front back on and changed the rear to +3 (Vortex). That seemed to do the trick w/o losing alot of top end, plus the Vortex sprockets are sweet.
 

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IF -1 is the same as +2 or even +3 (I've been hearing different things) then it wouldn't matter which one you have because the top end loss would be the same.
 

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I have a 04 rr and went +2 in the rear only to use my stock chain. It really didn't do much except loose some major top end.
 

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You can go up to +3 in the rear on the stock chain, especially on a 2002 that has some stretch. Probably not going to be as easy on a brand new stock chain but should fit fine. As far as -1 being the same as +3 just do the math.

Code:
2004 ZX6R std 15/40 = 2.66~
2004 ZX6R +2R 15/42 = 2.800
2004 ZX6R -1F 14/40 = 2.857
2004 ZX6R +3R 15/43 = 2.866
04 ZX6R -1/+2 14/42 = 3.000
04 ZX6R -1/+3 14/43 = 3.071
Code:
2005 ZX6R std 15/43 = 2.866
2005 ZX6R +2R 15/45 = 3.000
2005 ZX6R +3R 15/46 = 3.066
2005 ZX6R -1F 14/43 = 3.071
05 ZX6R -1/+2 14/45 = 3.214
05 ZX6R -1/+3 14/46 = 3.285
I personally ran my 2005 ZX6R with -1 and thought it was great, then added +2 to the rear and it was a bit much for daily riding. It did the trick for easy wheelies but was too much for the freeway. I might sell my -1 and pickup a +3 instead since it's so much easier to change the rear out. BTW I only use AFAM sprockets!
 

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Discussion Starter · #15 ·
so +2 or +3 will work with a stock chain hmmm... cause i only have about 3k miles on my bike so id hate to have to buy another chain.
 

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Yes, check your "hash marks" on the swingarm, see how many notches you have on the inside left. If you have 3-4 available to move inward (bringing tire closer to center) then you will be able to fit a +3 in there. I know for sure +2 fits no problem. Anyone else with +3 only and stock chain want to chime in?
 

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I tried a +3 with my chain really stretched out and it still wouldnt fit. +2 is the only way to go with a stock chain.
 

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My chain had about 5k on it when i went up +2 and it was a tight fit.
 
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