26" Trek 4100 Alpha 21 Speed with Aluminum frame Mountain Bike - $175 (Gresham)

26" Trek 4100 Alpha 21 Speed with Aluminum frame Mountain Bike 1 thumbnail

bicycle type: mountain

wheel size: 26 in

bicycle frame material: aluminum

suspension: suspension fork (hardtail)

brake type: v-brakes

handlebar type: riser

electric assist: none

condition: excellent

make / manufacturer: Trek

model name / number: 4100

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Alpha aluminum frame
26" wheels
21-speed Shimano drivetrain and
Shimano Altus rear derailleur.
Front suspension and V-brakes with Bontrager tires.
This bike has recently been tuned up and is in great condition and ready to ride.

post id: 7952391327

posted: 2026-08-08 14:13

updated: 2026-10-18 14:03

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26" Trek 4100 Alpha 21 Speed with Aluminum frame Mountain Bike -...

Alpha aluminum frame 26" wheels 21-speed Shimano drivetrain and Shimano Altus rear derailleur. Front suspension and V-brakes with Bontrager tires. This bike has recently been tuned up and is in...