121-136 Extension durability - HCS Snowmobile Forums

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Old 01-08-2011, 08:46 PM   #1 (permalink)
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Default 121-136 Extension durability

If I did just a 121-136 rail extension how does it hold up to jumping? Also, Can you fit a 136" under the normal IQr tunnel without a tunnel extension and using the stock snowflap? Any pictures?

What 136" Track are most people using? I ride mainly ditches and fields.. Trails every now and then..
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Old 01-08-2011, 08:54 PM   #2 (permalink)
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I'm not sure on the durability of the IQr but I had an edge chassis and did the extension and it was fine. I think I saw somewhere on here that there is no tunnel extension need if you add an 8" wheel kit but I am not sure.
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Old 01-08-2011, 11:51 PM   #3 (permalink)
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I have Iceage 136 rails with 8" billet wheels. no tunnel extension. I have a 136 x 2 inch track for sale. great for ditches!
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Old 01-09-2011, 12:11 AM   #4 (permalink)
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No extension needed if you use 8" wheels and keep the snow flap long.
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Old 01-09-2011, 12:20 AM   #5 (permalink)
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I'm borrowing a set of 121-144 Tracksusa extensions from a friend(Ibreakstuff) to use on my IQr whenever I find a decent deal on a track, but he had some problems with the rails trying to twist on him. Not sure if this will be a problem on the 136 rails or not.
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Old 01-09-2011, 01:54 AM   #6 (permalink)
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121 to 136 on my 97 700 flawless

121 144 tipped up ext's on my 02 800 flawless
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Old 01-09-2011, 01:56 AM   #7 (permalink)
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put them on my rr and two years later they are still straight. I needed to put larger wheels in the back for clearance issues
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Old 01-09-2011, 12:20 PM   #8 (permalink)
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what 8" wheel kit do you guys recommend and about how much does it usually cost for the big wheel set up
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Old 01-09-2011, 02:29 PM   #9 (permalink)
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I'll sell you a stock skid with 136" ice age rails in the spring.

I think you can get by without a tunnel extension but I guess it just doesn't look normal to me. Its also harder to pick the rear of the sled up with the track sticking out. I'm running a 8" wheel setup. The wheels are from western power sports there just plastic ones. I think they were 40$ a piece. I was able to use my stock axle.

Picture with no extension, I haven't mounted a sno flap yet.
IMG00039-20101212-1604.jpg
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