Need help with kdx200c front swap

Discussion specific to the various air-cooled KDX models sold in the USA
Jtons71
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Re: Need help with kdx200c front swap

Post by Jtons71 »

The spring rate is .48kg. When I think back on the conversation they did offer 3 or 4 options and I took one of the higher ones because I let my friends talk me into a motocross race once or twice a summer. The other bikes in my garage have been pretty neglected since I built my 1987 kdx 200. It always was my favorite.
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Re: Need help with kdx200c front swap

Post by hbgod »

So what your saying is a 1992 kx125 front end wont fit? thx your typo just cost me $250
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Re: Need help with kdx200c front swap

Post by KDXGarage »

1991 clamps will work with those forks.

The head tube on the 1992 KX125 / KX250 changed, causing the larger top bearing.

hbgod, don't trust one post from one person. Sorry.
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Re: Need help with kdx200c front swap

Post by hbgod »

Yah kindof stupid for me to trust a post but still. It would make sense that theyd fit. Wondering if i could just use different bearings. Thanks for the info. atleast its not a total waste.
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Re: Need help with kdx200c front swap

Post by KDXGarage »

No, 1992+ KX125 / KX250 top bearing is a good bit bigger to fit their larger head tubes. Same for 2004+ KX250F, 2006+ KX450F. KDX, KLX, KX500, "KX125 / KX250 before 1992" all have the same head tube.

This is the number one issue for the last 25 years on a front end swap from KX to KDX.
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Need help with kdx200c front swap

Post by Goon87 »

Holy cow thanks for the reply Jason was about to leave to go pick up the front end. So pre 91 is what I need to search for or there is no easy swap?
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Re: Need help with kdx200c front swap

Post by KDXGarage »

If one does not want to deal with a stem swap, then skip 1992 and newer KX125, KX250, KX250F, KX450F. KX500, KDX and KLX use the same size top bearing.
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Re: Need help with kdx200c front swap

Post by Jtons71 »

very sorry if I did cost you.
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Re: Need help with kdx200c front swap

Post by Jtons71 »

also it was a 45kg front spring rate
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Re: Need help with kdx200c front swap

Post by KDXGarage »

Was it Eibach brand? Eibach used to odd rate, Race Tech even
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Re: Need help with kdx200c front swap

Post by 6 Riders »

Cannon springs are what I ended up with in my 93 KDX. Apparently they are the only place that you can get lighter weight (mine are .41) springs for KDX's anymore.
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Re: Need help with kdx200c front swap

Post by KDXGarage »

If you don't mind me asking, how much did they cost?

I see that RT has .42, 44, 46 and 48
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