Is Trek 3900 Mountain Bike A Good Bike? [Trek 3900 Review]

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The Trek 3900 is a mountain bike in the Trek 3 series. In 2005, it was only $329.99. It falls under the category of low-cost mountain bikes. But it’s a mountain bike that will be with riders for the next ten years. It is worthwhile to spend the time learning about it.

Trek 3900

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