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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Attention KX/KDX hybrid builders
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[QUOTE="Wilky, post: 1114334, member: 56599"] You have to do both..... and more. The KDX swing arm bolt has about a 2mm smaller diameter than the KX which make the KX frame and swing arm incomputable with the KDX bolt. Also the KDX engine is a little wider than the 125 so you will need to cut down the kx collars so the 200 will fit in there. You will also have to flatten out the clutch side of the kx frame a little so the clutch case doesn’t rub. The fuel tank will need to be heated and modified so the water outlet on the head doesn’t come in contact with it. I have made two hybrids, 1994 motor in a 92 kx125 and a 1990 motor in a 94 CR125 and I had to modify both motors by enlarging the swing arm hole from 15mm to 17mm (if my memory is correct) and cutting down the collars. The CR didn't need the frame mods but did require the fuel tank to modified a little. A couple more things. On a post 94 KDX engine the head has a motor mount on the front and back. I believe you will have to remove the back motor mount on the head so it doesn’t hit the fuel tank when mounted in the kx125. You may also need to make some custom motor mounts for the front head mount and you will defiantly have to weld on new lower mounts to the frame. Hope this helps. Scott [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Attention KX/KDX hybrid builders
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