Trek Boone 5 Used a handful of times as good as new. Excellent condition. Did not get to use it as intended unfortunately. Too nice to be left sitting in my garage. Cost over $3500 new before tax fanatic deal at $2700 Size 56 Genuine Interest only. TREKS BLURB. Boone 5 Disc is the gateway to carbon in our cyclocross lineup. It's a fully race-ready cyclocross bike, with a lightweight carbon frame and Front and Rear IsoSpeed to take the edge off rough courses. Cross-specific components, a geometry designed with input from pro racers, hydraulic disc brakes, and a 1x11 drivetrain make it a great choice for racers and gravel riders alike.