Trek 4100 2003 Hardtail user reviews : 3.7 out of 5 - 33 reviews - mtbr.com
Trek Alpha 4100 Mountain Bike for sale online | eBay
TREK Alpha 4100 Hardtail Mountain Bike - bicycles - by owner - bike sale - craigslist
TREK 4100 ALPHA MOUNTAIN BIKE, Sports Equipment, Bicycles & Parts, Bicycles on Carousell
RLB Cycleworks - A nice 2004 Trek 4100 aluminum frame mountain bike with a 16” frame. Professionally serviced and ready to ride! A higher-end mountain bike with an semi-aggressive geometry with excellent