I converted a 2010s Trek 4500 into a gravel commuter ❤️ : r/gravelcycling
Disc Brake Bleed Kit For Trek Mountain Bike – Cycling Kinetics
Amazon.com : JFOYH 4-Piston Pre-Bled Hydraulic Disc Brake Set for Mountain Bike, Bike Disc Brake Kit with 160mm Rotors, Front and Rear Levers(PM Adapter Included) - Left-Front&Right-Rear : Sports & Outdoors
2003 Trek 4500 Alpha w/ Upgrades & Lifetime Warranty For Sale
TREK 4500, SERIES 4, Mountain bike For Sale In A1 Condition! £260.00 - PicClick UK