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Discussion Starter · #1 ·
What gearing do you have? Thanks!
 

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Discussion Starter · #2 ·
I would like to get the most top speed out of it as i can but still be able to function on the trails...

My thoughts were to run a 13/40 or 41, not sure yet, but would like to purchase a new sprocket kit this week so any info would be great thanks!
 

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I use to run the 22" razors...if you have a pipe or not it will run a lot better with a 12 tooth front, stock rear... I ran a 13 and it was a good road combo/flat terrain gearing....I wouldn't go beyond the 13 tooth front unless you have had engine work done..a 14 tooth with 22" tires is basically a 15 tooth on 20" tires....
 

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Discussion Starter · #5 ·
I might buy both a 13 and a 14 just to try out the 2 and keep the one that works best. Thanks for the help :thumbsup:
 

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Discussion Starter · #9 ·
pewterpecker said:
No need to buy a 13, your stock sprocket is a 13.

::)

thanks, i just realized that, I didn't count the sprocket in over a year and just noticed it was a 13... I don't know why 12 was sticking out in my head...

I am gonna just try a 14 and see what happens, I might hate it and if I do Ill go back and I'm only out a few bucks...


Does any of your guys 22's rub the back of your stock heel gurads?? Mine does and it wears down that part of the tire... Is there anything you can do without removing the guards??
 

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Discussion Starter · #12 ·
They dont rub just setting there its when you start hitting some major bumps and when you open it up down the road you can hear them just skimming the metal on the guards
 

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I run 22" razr2s and there awesome, mine rubbed on the heelgaurds so i installed the aluminum gytr ones they dont rub & are way stronger. i also installed a RPM axle to clear my twin pipes & give the bike more stability, wondering if anyone is running a 12 tooth sprocket with there RAZR2s?
 

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Desert Racer said:
I have 22's in the rear with stock gearing. If you go up in the front it will kill your torque and take a long time to top out. I also have a pipe,re jetted and pro-design filter setup.
It in no way kills your torque. Might bring it down a little, but mine still pulls up in the first two gears. As for your tires rubbing on your heel guards, I would put an extra link in your chain and then re adjust your tension.
 

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bgmac said:
Desert Racer said:
I have 22's in the rear with stock gearing. If you go up in the front it will kill your torque and take a long time to top out. I also have a pipe,re jetted and pro-design filter setup.
It in no way kills your torque. Might bring it down a little, but mine still pulls up in the first two gears. As for your tires rubbing on your heel guards, I would put an extra link in your chain and then re adjust your tension.
BGmac-What kind of modding do you have done to your motor?
 

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12 tooth is the way to go.I had 12 tooth on my 2001 660 with 22inXCT holeshots.12x40 best combo.You jump right out of the hole. Dont know what type of riding you do but when i had my 660 i mostly ran trails and gravel pits.
 

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Alright... the more I read about tire and sprocket sizes I get confused. I'm running 22" tires and 13/40 sprockets. My only mods are a White Bros E-series slip-on, K&N pro flow kit. I am 170lbs I find that there is a ton of low end torque... great for the trails etc. but on the MX track I have to short shift because I bounce off of the rev limiter. What sprocket sizes should I run for longer shifts / greater speed with the 22" tires. Would it be beneficial to drop to a 20" tire also??? Thanks :help:
 

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I thought the 12 would give me more torque and not speed??? I was thinking of dropping to 20" tires and going up to a 14 tooth on the front......
 

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1. 22" rear tires are a bad idea at the MX track and often 20" is bigger than you need. Most run 18 or 19 rear with a 19 or 20" front respectively. If it's badly rutted I've seen some run a 21/20 setup but not often and not in pro classes.

2. You shouldn't be bouncing off the rev limiter with only a slip on pipe, especially with stock gearing and big tires. If you are bounding off the limiter then you're not shifting when you should, you're making peak power somewhere around 7k rpm, not at the 9k rpm limiter.

3. What gear are you running in aorund the track? You should be using them all, at least 1-4, in order to get around the track the fastest. Normally to do this people have to shorten their gears and go with a higher ratio, not go to a lower ratio as would happen with the 14 tooth front.

Also, adding another link to your chain won't help you get the axle back farther if you're already at the end of your carrier adjustment.

And going up a tooth in the front, whether it's from 12 to 13 or 13 to 14 will have a noticeable affect on your "seat of the pants" torque. You may still have enough for your application but it'll be cut down significantly.
 
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