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post #1 of (permalink) Old 12-20-2003, 10:58 AM
kfx700man
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kfx 700 belt spring?/

a friend of mine was telling me i needed to buy some sort of spring system for my CVT belt when adding an exhaust,jet and filter i just ordered a DMC alien exhaust with jet kit and k&n filter and was wandering if anyone else has heard this? DMC mentioned nothing if this is true. I have a lava red kfx 700 v force and have just started modifying it.I absolutly love this machine stock and can't wait to see what the mods do for it.i also ordered ac pro peg with heel guard nerfs a dg front bumper and dg a-arm guards i'll try and get a picture up after i add on all these mods.thanks,MARK
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post #2 of (permalink) Old 12-20-2003, 12:30 PM
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Re: kfx 700 belt spring?/

I think what your friend was talking about is, most of the time when you add an aftermarket exhaust and air filter, you raise the rpm level that the majority of power kicks in at, and lose some power down low (it's a trade off).The belt drive transmissions use a spring tensioned clutch, with weighted cams like a snowmobile has to keep the engine at a certain rpm while under a load accellerating. By changing the spring on the clutch to a stiffer one, it lets the engine pull at the higher rpm before shifting out so it pulls stronger. I've read quite a few posts on other forums talking about changing the spring even on stock KFX700 and Prarie's, and from what I've read it seems there can be a huge gain in performance just from the spring change alone. There are complete aftermarket clutch kits available for the 700, but I don't know who makes them. I would check into having the clutch tuned by your dealer, or check with some of the other forums to find out what would work best for your set up. I know once everything is tuned right, those 700's are pretty quick in the dunes. Good Luck. [img]images/graemlins/40BEER.gif[/img]
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post #3 of (permalink) Old 12-22-2003, 12:34 AM
kfx700man
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Re: kfx 700 belt spring?/

hey thanks for replying. It is the clutch spring and i reserched it and found that a pink spring was the best for me because it had no stall. i just got into riding 6 months ago when i bought a suzuki 500 vinson 4x4 and in sept. went to the dunes and had to have a sport quad so i bought the v force since i like the automatics for more enjoyable riding. Just now getting into the modification field i have a lot to learn thanks again man!
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post #4 of (permalink) Old 12-22-2003, 10:17 AM
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Re: kfx 700 belt spring?/

No problem, glad to pass on any info I can to help, and will only do so if it's something that I can honestly say I know at least a little about. I did a lot of research on the variable clutch stuff after I bought my snowmobile a few years back, just because I was interested in finding out exactly how it worked, and how to make it work better in the future.
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post #5 of (permalink) Old 12-27-2008, 10:01 PM
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spring

try a pink and blue spring they seem to work good. i have one in mine. check dalton ind. or the kfx700 site good info there on springs.
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