![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 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](https://i.redd.it/0pvty8v94om81.jpg)
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
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20" TREK 4500 Alpha TREK Aluminum 24 Speed Hardtail Mountain Bike 6'0"-6'3" for Sale in Visalia, CA - OfferUp
![TREK 4500 ALPHA 17.5 inch frame 26 inch tires 24 speed mountain bike BONTRAGER SHIMANO for Sale in Ramona, CA - OfferUp TREK 4500 ALPHA 17.5 inch frame 26 inch tires 24 speed mountain bike BONTRAGER SHIMANO for Sale in Ramona, CA - OfferUp](https://images.offerup.com/a4d3AFJf2yR-ndDSNDGaF400Cso=/333x250/5654/5654345ccbc14dada84368f1a19c0815.jpg)