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Hello Suzuki Central! I have a burning question and I’d love to hopefully get some good input. About 10 months ago I purchased a 2006 KFX 400. This thing was almost mint (minus the cracked reverse light) and had hardly any hours on it. Was maintained and kept in a heated garage and runs like a champ.

However, I have a big issue. This quad was a very quick purchase of Craigslist, because of this I had no time to do research on issues related with this atv. When washing it for the first time, I noticed there was a fine black line across the top half of the swing arm. But because of my lack of knowledge on this machine, I thought it was supposed to be there. Fast forward to about a month ago, I was cleaning my chain and swing arm when I relized that this line was a major crack. Did some research and came up with two options. Weld or replace. Fast forward to today, I went to grease my axle carrier for the first time. Turns out the entire top half is snapped off entirely and I’ve been riding it like this ever since I bought the thing.

so here’s what I’m wondering. Do I replace it? If so what aftermarket swing arms are made for the kfx in 202? Or isit still weld able. Thanks
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i had crack right there all the way , i just weld it like few weeks ago , so far seems to held alright....
 
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Clean break and weld able, Issue is the aluminum does absorb Grease and oil and it is hard to get a nice weld. If it were me I would go with a aftermarket swingarm if you plan on keeping. There is a guy on Facebook that is making the mounting kits to use a LTR 450 arm which is a nice piece.
 
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