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Old 11-14-2011, 04:04 PM   #1
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ZR 600 long track

I have a 2002 zr 600 efi cross-country edition and I was looking into long tracking it. I've been doing some research and decided i want to get the 121 to 144 kit on tracks usa with a 1.5" lug track. I have read that i will have to notch the center lugs for the heat exchanger for that size.. is this true? I would also really like to go to a 1.75" lug but i wanted to know exactly what i would need to do that size lug. I have read that you can put a smaller drive sprocket on to make it work. Any help would be great thanks...
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Old 11-14-2011, 06:47 PM   #2
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1-3/4" will fit without notching if you use 8 tooth drive sprockets and lower the skid mounting points in the tunnel.
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Old 11-14-2011, 06:53 PM   #3
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Okay thanks. How do you lower the skid mounting points in the tunnel? Do you just drill new holes or is there some already there? and what pitch does the sprocket have to be? 2.52? will these sprockets work?Drive Sprockets for Snowmobile | Hi-Performance Engineering

Thanks for the feedback.
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Old 11-14-2011, 09:12 PM   #4
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Alright i have found the drive sprocket i am going to use.. it is a kimplex sprocket from dennis kirk.. I have another question. Will i need to get different outer drive wheels as well? and what gearing do you think would be good?
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Old 11-14-2011, 09:22 PM   #5
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On mine I found a corner cooler setup off of a mountain cat on ebay and have plenty clearence on my 1 1/2" track. It looks like I could go taller lugs if I wanted.
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Old 11-14-2011, 09:29 PM   #6
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is that a tunnel extension on yours or a whole tunnel off another sled? it looks great.
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Old 11-14-2011, 10:21 PM   #7
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 Quote: Originally Posted by tide2085 View Post
is that a tunnel extension on yours or a whole tunnel off another sled? it looks great.
It's a tunnel off of a 03 144" mountain cat. Got lucky on the tunnel and found it cheap it only had 500 miles on it.
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Old 11-14-2011, 10:38 PM   #8
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 Quote: Originally Posted by tide2085 View Post
I have a 2002 zr 600 efi cross-country edition and I was looking into long tracking it. I've been doing some research and decided i want to get the 121 to 144 kit on tracks usa with a 1.5" lug track. I have read that i will have to notch the center lugs for the heat exchanger for that size.. is this true? I would also really like to go to a 1.75" lug but i wanted to know exactly what i would need to do that size lug. I have read that you can put a smaller drive sprocket on to make it work. Any help would be great thanks...
Make sure you run about 18/40 gearing in it, or it won't pull itself
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Old 11-14-2011, 11:04 PM   #9
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As for lowering the skid in the tunnel -

Look inside the tunnel where the front mount is. There is a steel doubler plate that has multiple holes, but only one that is drilled through the aluminum tunnel wall. Drill out the one directly below the the one already drilled and use that at the front.

At the rear mount, it usually mounts through the tunnel above the running boards. Mount the rear in the bracket below the tunnel.

With these two, and the 8 tooth drivers, the 1-3/4 will clear the stock coolers no problem. I would suggest however that you also run anti-stab wheels when running the 8 tooth drivers. Anti-stab wheels mount at the tips of the skid rails to prevent the rails from penetrating the track if you hit a rock, stump, etc.
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Old 11-14-2011, 11:05 PM   #10
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 Quote: Originally Posted by snow800 View Post
Make sure you run about 18/40 gearing in it, or it won't pull itself
He won't need to change gearing if he switches to 8 tooth drivers. The driver switch from 9 to 8 tooth is an 11 percent change in final gearing ratio all by itself.
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