21.5" TREK 4100 Aluminum Hardtail Mountain Utility Bike ~6'1"-6'4"
Quality Trek Alpha 4100 / 21.5 Tall Frame / 21 Spd Mountain Bike w/ Front Suspension | P.W. Sales Haysville KS - Warehouse Auction // Gas Stove / Trek MTB / Native
Trek Women's Mountain Bikes for sale in Spring Hill, Tennessee | Facebook Marketplace | Facebook
2003 4100 - Bike Archive - Trek Bicycle
Trek 4100 Front Suspension Mountain Bike - Roller Auctions
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