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  #1  
Old 04-04-2013, 12:53 PM
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Default Trail Boss 250 front sprocket tooth count?

Anyone know what the tooth count is on a 98 trail boss 250 front sprocket? I want to drop down a tooth for better take off
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  #2  
Old 04-04-2013, 12:59 PM
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Why not install an EPI clutch kit??
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Old 04-04-2013, 01:34 PM
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I want to wait until I'm piped and a few other mods
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Old 04-04-2013, 01:51 PM
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12 teeth on the front sprocket (3221044) An 11 tooth Polaris sprockets from the older models won't fit because of the shaft dimension difference. You might try Sunstar or JT sprockets if any are available for your 98 model. Plus you may not notice that much difference. As mentioned clutch kits will.
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Old 04-04-2013, 02:47 PM
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Whats a good clutch kit for a basically stock bike? I'll be running a clamp on filter and jet kit as far as mods
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Old 04-04-2013, 03:04 PM
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See if these old posts help.http://forums.atvconnection.com/pola...ml#post1628119
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Old 04-04-2013, 05:15 PM
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Ok, so what would be a good primary spring to go with, green, white or pink? I want more low end for wheelies and trails, and don't want to sacrifice up top power. If I can accomplise what I want with a spring that would be great, as I know after awhile I'm.going to heavily mod it and will have to start over
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Old 04-05-2013, 02:13 PM
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Is your primary spring that's in the clutch now the factory spring and if so what color is it and do you know the stall and shiftout speed ratin of it? If it's an aftermarket spring what company is it and what color is it and do you know the rating for it?

For a stock quad I would probably start to go up around 10 to 15 on the stall speed and maybe around 5 to 10 to 15 on the shiftout speed. To be honest with you on a stock quad you might not see any difference at all or you may even loose power depending on the porting of the factory cylinder and how well it works with the factory exhaust. Sometimes there are slight variances with the factory port work and how well it works with the factory exhaust dimensions so sometimes it's possible to improve performance with clutching and sometimes it isn't.
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Old 04-06-2013, 07:57 PM
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Its the factory spring. I'm not sure what color it is. The only mods for now are going to be 73mm top end, clamp on filter, and jet kit
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Old 04-06-2013, 09:42 PM
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Blue/green is the stock spring. As far as what else to to do or spring color,white,red or pink or what ever,you can contact either EPI or High Lifter for some answers,plus how you ride . EPI Performance ATV and Snowmobile Clutch Kits: Polaris High Lifter Products - Clutch Kits
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Old 04-06-2013, 09:42 PM
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2005, 250, big, boss, change, front, polaris, polorise, quadrear, shaft, size, spocket, spricket, sprocket, trail



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