TREK 4500 ALPHA 17.5 inch frame 26 inch tires 24 speed mountain bike BONTRAGER SHIMANO for Sale in Ramona, CA - OfferUp
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Trek Alpha Aluminum Front Suspension Mountain Bike - Roller Auctions
Sold Price: 26" Black/Red/Gold Trek Alpha 4500 Mountain Bike - February 6, 0123 9:00 AM PST
Hi! I have for a long time this early 2000's Trek Alpha 4500 and I want to do an upgrade project on this bike, what things do you recommend me to upgrade