KX Riders
Maintenance & Technical => KX250 / KX125 => Topic started by: or1on on April 27, 2009, 03:55:08 AM
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hi all new to the site here, i recently bought a 02 kx250 and have been riding it around the last few weeks and man is she snappy :) ...anyway i was reading alot of posts about flywheel weights and decided i would pop the cover off of mine and make sure there was nothing there b4 i bought one (im new to 2 stokes so the feel of the power is new to me) i cant seem to find a pic of what a stock flywheel looks like
but i dont think this is it
http://www.efw-ut.com/filez/flywheel1.jpg (http://www.efw-ut.com/filez/flywheel1.jpg)
http://www.efw-ut.com/filez/flywheel2.jpg (http://www.efw-ut.com/filez/flywheel2.jpg)
http://www.efw-ut.com/filez/flywheel3.jpg (http://www.efw-ut.com/filez/flywheel3.jpg)
has this flywheel been lightened up, and if so is it worth it to put a stock flywheel back on b4 i get the weight? anyhelp is appreciated thanx :P
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I'm on a 2002 KX250 and had my flywheel cover off a couple weeks ago. The pictures you posted look stock; but mine was smooth all around. It looks like yours may have been drilled to lighten up. ?? But the holes are only on 1 side, so it may have been done to balance the motor. ?? I think I'd consider your flywheel weight as stock.
As far as getting a flywheel weight for your bike, I recommend holding off for a few months. Ride the bike a bit more and see if you really need it. When I first got my 2002 KX250 I thought I needed a flywheel weight, I held off (because I'm cheap) but now I'm used to the power and bike and can go anywhere. I feel I don't need the weight. Unless you're doing some real tight and slow single track you probably don't need it.
If you do buy a weight, I'd go with a 9oz. This will help with the bottom end and not effect the mid and top.
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ty for your reply, yes i believe it is stock sum1 on thumper posted a pic of a stock 04 and it looks very similar i just assumed when i saw all the holes that it had been lightened up
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Hey Orion,
I have an 05 kx250.I have it set up for woods riding and installed a 13oz flywheel weight from steelhy offroad.It makes the bike much more tamable in tight woods as well as on the track.When going up a muddy inclined its like a tractor.You dont have to feather clutch nearly as you would with out weight.Id have to agree w/ azdirtrider if you r not in tight woods and plan on riding mx tracks you may not need a weight.If you do decide to get one they come in 9,11,&13ounces.iIf I had to make a recomendation to ya I would tell you to get a 9oz or 110z flywheel weight.Then once you get use to the bike w/ weight.You can always remove it.Hope my input was someway helpful!
Biily C