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2015 Colnago CX Zero Disc Ultegra

$4,699.99 $3,289.99

This Colnago CX Zero Disc Ultegra Bike differs from its Ultegra Di2 brother in one way. This bike comes with mechanical shifting. Shimano recently added a mechanical-shifting/hydraulic-braking STI lever to their offerings, and Colnago is taking advantage of it here.

This platform is a pro-level carbon-fiber bike made for long rides, hard rides, and rough roads. As a result, compliance and stability are designed in. While the bike works great on rough roads, the benefits of the design work great on smooth roads as well. The road feedback is blunted and whatever lumps you ride over are absorbed by the frame. The result is greater comfort and less fatigue. Even with this factored in, the bike is still designed for throwing power down to the pedals, with incredible torsional stiffness thanks to the first-ever Colnago BB86 bottom bracket shell and the tapered 1 1/8″ to 1 1/4″ steerer tube which hides inside an oversized head tube that has replaceable cups for the headset bearings.

The CX Zero Disc is a rarity in the bike world, a road bike built around rotor disc brakes. Colnago had been eyeing the technology for some time and working on how to best mate discs with a road frameset. This is their answer. Colnago is ahead of the pack on this one.

The lay-up and shapes reflect the forces that not only what heavy braking does by the hub, but how human power from above and the road from below affect the ride. As the intermediary to the road, the bike was designed to be ridden fast, with a confident, stable, comfortable mien. To maximize comfort, the chain stays are curved and taper dramatically as they move toward the dropouts, the seat stays are thin, and a 27.2mm seat post is used. To maximize efficiency, Colnago employs a BB86 bottom bracket, which allows for the chain stays to be set wider, to better resist pedaling forces and give more room for wide tires. Up to 28mm will fit.

Going with mechanical Shimano Ultegra means you have more tactile sensation while pounding rough roads. You’ll have an easier time locating the shifts under heavy gloves. Brakes are Shimano’s hydraulic BR-RS785 calipers, road brakes with their Ice-Tech pads for better cooling. And their SM-RT99 Ice-Tech rotors, which, thanks to the multiple metals used as well as cooling fins, allow the brakes to run even cooler. They’ve set up the front wheel with a 160mm rotor. The rear remains 140mm.

Ultegra shifting and cranks offer pro-level performance on an amateur’s salary. The ergonomics and feel are the same. The 50/34 compact chain rings and 11-25 eleven-speed cassette offer a wide, tightly-spaced range of gears.

This is a bike designed to last as long as the ancient roads that support classic racing. While this bike is configured for mechanical shifting, it can easily be switched for electronic, with the battery run either externally or internally.

The Colnago CX Zero Disc Ultegra bike gets you an endurance ride that punches above its weight.

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