A BLACK AND GREY TREK 3900 ALPHA GENT'S MOUNTAIN BIKE WITH FRONT SUSPENSION, QUICK RELEASE WHEELS, A
![Trek 3900. Seller asking $125. Good deal? Don't know a whole lot about bikes. Needing to get one. : r/whichbike Trek 3900. Seller asking $125. Good deal? Don't know a whole lot about bikes. Needing to get one. : r/whichbike](https://i.redd.it/trek-3900-seller-asking-125-good-deal-dont-know-a-whole-lot-v0-fny19uht5o891.jpg?width=960&format=pjpg&auto=webp&s=ae161e7b83f14eb22579cfa0eafb8ac78ce144ec)
Trek 3900. Seller asking $125. Good deal? Don't know a whole lot about bikes. Needing to get one. : r/whichbike
![Trek 3900 3 Series Sport Level Mountain Bike 18"/46cm black - SHIW | Used Bikes for Sale - Silicon Valley Bicycle Exchange - Bay Area Trek 3900 3 Series Sport Level Mountain Bike 18"/46cm black - SHIW | Used Bikes for Sale - Silicon Valley Bicycle Exchange - Bay Area](https://130002567.cdn6.editmysite.com/uploads/1/3/0/0/130002567/s518234545767551931_p1457_i1_w2048.jpeg)
Trek 3900 3 Series Sport Level Mountain Bike 18"/46cm black - SHIW | Used Bikes for Sale - Silicon Valley Bicycle Exchange - Bay Area
![Trek 3900 MTB - $1100, last price $700, slash again $500, Sports Equipment, Bicycles & Parts, Bicycles on Carousell Trek 3900 MTB - $1100, last price $700, slash again $500, Sports Equipment, Bicycles & Parts, Bicycles on Carousell](https://media.karousell.com/media/photos/products/2019/09/17/trek_3900_mtb__1100_last_price_700_slash_again_500_1568696668_3b281e0e_progressive.jpg)