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Trek 3900 mountain bike, alloy hardtail MTB, size M/L, 18”, $390. - NOW
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Trek 3900 XC Hardtail user reviews : 3.9 out of 5 - 48 reviews - mtbr.com
Trek 3900 Disc XC Hardtail user reviews : 4.5 out of 5 - 4 reviews - mtbr.com
19.5" TREK 3900 Alpha Aluminum 21 Speed Hardtail Mountain Bike 5'9"-6'0"
18" TREK 3900 Aluminum Commuter Utility Bike ~5'6"-5'9"
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Trek 3900 Mountain Bike
