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
![2 Rivers Used Trek 4100 Large - 2 Rivers Bicycle and Outdoor - Bicycle Shop - Fort Atkinson and Watertown Wisconsin 2 Rivers Used Trek 4100 Large - 2 Rivers Bicycle and Outdoor - Bicycle Shop - Fort Atkinson and Watertown Wisconsin](https://www.sefiles.net/merchant/2200/images/large/bikes10.png)
2 Rivers Used Trek 4100 Large - 2 Rivers Bicycle and Outdoor - Bicycle Shop - Fort Atkinson and Watertown Wisconsin
![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 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](https://18cfdfd73150f69310ab-4d842a0601d0ae955a714605e7fb6d6f.ssl.cf2.rackcdn.com/23438/22420347.jpg)