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Discussion Starter #1
Since the zx-6r acceleration in the low rpm's isn't that good, i was thinking of changing sprockets. now i got two different opinions: my dealer tells me to change the rear sprockets cuz of chain reasons yadayada (forgot the details) while my friend tells me to change the front little sprocket (he did the same thing and it's nice).

so changing the front little sprocket only costs like $20 whereas the rear one is much more expensive. i have no idea now. Does anyone have experience with this stuff?
 
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from some people's experience, the smaller front sprocket will cause the chain to wear quicker. it might be true. i went -1 on my 04 and the chain has to be constantly adjusted. next time im putting stock shit back on, or +2 on the back.
 

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-1 in the frount is the same thing as +3 in the back.

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.



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



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

read this thread: http://www.KawiForums.com/forum/topic.asp?TOPIC_ID=58819

there are a lot of posts regarding this topic there.
 

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I personally went ahead with the +2 rear sprocket, being as i just wanted a little bit more drive out corners without totally changing the gearing on the Top..
Yes the rear sprocket will run you close to $80.00 depending on which brand you use...
whichever you do use, get the ahrd anodized version..

If you do the front, that should cost maybe $20.00 and is a little more than +2 rear on the back.
sure you should be happy with either one, unless you are just wanting Alot of wheelies and serious high RPM on the highway.
 

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Yeah. My -1 front is sweet but I do have to keep an eye on the chain and make more adjustments. NOT A BIG DEAL

I'll probably change to a +3 next time but a -1 front is a quick and easy and cheap install....that's why I went that way. A new chain next spring won't be cheap though[:p] ta well. I'm rich anyway[8D];)
 

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Discussion Starter #10
Thanks for the replies so far. As far as i see, half of the people say it's no problem with only -1, others say i should do the the rear or both instead. So my question is: If i only wanna do -1, how often do i need to adjust the chain and do i need a speedohealer?
 
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u'll need a speedohealer

i have to adjust mine like after every long ride i take. could also be the chain not being good quality in the first place. my OEM lasted 20k miles. this one doesnt even have 10k yet.
 

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Originally posted by tcpt
Thanks for the replies so far. As far as i see, half of the people say it's no problem with only -1, others say i should do the the rear or both instead. So my question is: If i only wanna do -1, how often do i need to adjust the chain and do i need a speedohealer?
My bike only have 3700 miles on it and I just did the -1 last week. I haven't had to adjust my chain yet. If I end up going +2 in the rear I'll get a speedohealer. It's not off too much now. It's making me think I'm going faster than what I really am. Saves me from that speeding ticket.
 

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Discussion Starter #13
I'm not very experienced with technical stuff...if i go with +2 then i wouldn't have to adjust the chain, only install a speedohealer, is that correct?
 
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