21.5" TREK 4100 Aluminum Hardtail Mountain Utility Bike ~6'1"-6'4"
17.5" Trek 4100 (K941 K3U) - Working Bikes
Trek 4100 Frame Size 20 FINAL SALE!! | eBay
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
Trek 4100 Frame Size 20 FINAL SALE!! | eBay
17.5" Trek 4100 (K941 K3U) - Working Bikes
2004 TREK 4100 Mountain Bike Bontrager - YouTube
17.5" Trek 4100 (K941 K3U) - Working Bikes
22" TREK 4100 Aluminum Hardtail Utility City Mountain Bike ~6'1"-6'5"