bicycle frame material: aluminum bicycle type: mountain brake type: caliper condition: excellent frame size: medium make / manufacturer: Trek model name / number: 4100 Alpha suspension: suspension fork (hardtail) wheel size: 26 in
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A 21 speed TREK 4100 Alpha Aluminum hard tail mountain bike complete with an Sync suspension fork, 7 speed Shimano rapid fire shifters and derailleurs, triple cranks, alloy quick release wheels, and powerful V brakes. Good for off road adventures as well as urban transportation. Medium frame fits riders from 5'5" to 5'8".