Maintenance & Technical > KX250 / KX125
flywheel weights
Joe_Dirt:
I have a 2004 KX 250 and i put a 51 tooth sprocket on the back and a 13oz. FWW. Where i live the trails are tight as heck and its 1-2nd gear all the time. The bike is alot easier to ride over roots,logs and technical stuff without stalling. Taming the hit from the powerband, i guess it did a bit but its no dog to ride it still has lots of punch.
There are only 2 brands to choose from that i know of, Steahly and SFB Racing. I got mine from SFB and it bolted on real easy with no set screws on the side like i think the steahly has.
Hope this helps ya.
eprovenzano:
Thank you gentleman, (I use that term loosely... :wink: ) that's exactly what I needed to know.
I'll definitely add a flywheel weight to my winter purchases. Since I purchased my bikes used, I plan on placing the top end on both my KX, as well as my son's YZ. So I might as well throw on a flywheel as well....
Boys and their toys.... :roll:
eprovenzano:
I took everyone's advice and purchased an 11oz flywheel weight. I was temped by the 13, but I don't want to lose the snap I love so much. I just need to make her a little more trail friendly. I'm also going to change the rear sproket, adding a few teeth.
I'm sure the gearing change will help, along the the addition of the flywheel weight, I'm ready for any type of trail or track...
eprovenzano:
After some careful consideration, I replaced the front sprocket, dropping a tooth. I took her for a trail ride, and the difference was definitely noticeable. I was able top let her bog down, and with a twist of the throttle, get on it in a hurry.
I also purchased an 11oz flywheel weight. I'm having a tough time getting the nut off the crank. Any suggestions as to removing the nut.
hughes:
There is a special tool that holds the flywheel and you can use a impact driver to remove the nut with. It's hard to hold the flywheel and use a stand hand tools to remove it.
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