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Trek 3900. Seller asking $125. Good deal? Don't know a whole lot about bikes. Needing to get one. : r/whichbike
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2006 Trek 3900 - Specs, Reviews, Images - Mountain Bike Database
2007 Trek 3900 – Specs, Comparisons, Reviews – 99 Spokes
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2015 Trek 3900 Disc – Specs, Comparisons, Reviews – 99 Spokes
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Trek 3900 Disc reviews and prices - Hardtail bikes
Trek 3900 Disc - North Rim Adventure Sports Chico Ca
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Revised Review: 2010 Trek 3900 disc – mtbboy1993
Trek 3900 mountain bike, alloy hardtail MTB, size M/L, 18”, $390. - NOW
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13" Trek 3900 MTB - River Bicycles
3900 Disc - Trek Bikes
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