Sachs forks

Questions and comments about converting to beefier forks..
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kdxdazz
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Sachs forks

Post by kdxdazz »

Anybody no anything about these forks, from the Supermoto Aprilia, available for a steal and I'm a sucker for a bargain
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1999 KDX220SR (KDX220-B5)
Chopperpilot
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Re: Sachs forks

Post by Chopperpilot »

I don't have any direct knowledge, but Sachs forks seem to have a hit or miss on whichever years they got the valving correct, or not. Those look like Open Chamber forks, so generally easy to rebuild and re-valve. If I was getting them for a steal, I'd probably go for it with the understanding I'm going to be re-doing the valving on them.
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Re: Sachs forks

Post by KDXGarage »

What would be the travel and spring rate?
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kdxdazz
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Re: Sachs forks

Post by kdxdazz »

I imagine the travel would be less but that would be a good thing for the kdx as most forks are too long from what I've read, I don't have a lot of knowledge on upside down forks
1999 KDX220SR (KDX220-B5)
Chopperpilot
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Re: Sachs forks

Post by Chopperpilot »

I'd speculate the spring rate is greater than the KDX, but that isn't a bad thing. The brake mount is superior to most dirt bike brake mounts, but you'll have to get the caliper that works with it (I think they refer to that as radial mounting). Any idea what they came off of? because you're kind of stuck with the caliper, so hopefully you can get the whole front wheel and axle setup to go with it. What about the triple clamps? are they coming with it? Some YZ ones might fit the clamping diameters, if you can measure the diameter where the clamps grab the tubes we can see if other brand clamps will work.
kdxdazz
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Re: Sachs forks

Post by kdxdazz »

Chopperpilot wrote: 10:27 am Feb 11 2025 I'd speculate the spring rate is greater than the KDX, but that isn't a bad thing. The brake mount is superior to most dirt bike brake mounts, but you'll have to get the caliper that works with it (I think they refer to that as radial mounting). Any idea what they came off of? because you're kind of stuck with the caliper, so hopefully you can get the whole front wheel and axle setup to go with it. What about the triple clamps? are they coming with it? Some YZ ones might fit the clamping diameters, if you can measure the diameter where the clamps grab the tubes we can see if other brand clamps will work.
I was thinking all those questions too, they are from the Aprilia sxv550 super moto, a dream bike by most people's standards
I have a set of kdx250 triple clamps, not sure if they will be big enough diameter, will go take a look at them and take some measurements
1999 KDX220SR (KDX220-B5)
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