An in-depth look with video at Colnago’s latest super bike, the Colnago K-Zero.
The brand new K-Zero is a massive leap forward for Colnago, ushering in a new level of aerodynamics and component integration for the famous and prestigious Italian brand which has always embraced technology and innovation but hasn’t been a major player in recent years when it comes to triathlon bikes. Judging by the beautiful K-Zero it seems that they’re making up for lost time. What’s more, they say that great care was taken to ensure the K-Zero has the handling and power transmission for which Colnago is known.
NACA (the US National Advisory Committee for Aeronautics) airfoil profiles formed the foundation for the development of the tubeset but that was just the beginning. Colnago modified the profile of each tube to suit its position on the bike and the behaviour of the airflow meeting it, treating the bike as ‘a complete system’. Colnago say that this strategy characterises their approach to bike design and it’s also similar to the way that Formula One cars are designed, where every component is shaped with equal importance placed on doing its own job and also controlling how airflow reaches the components behind it.
The handlebar and stem are Colnago’s own and they have several unique features. The clamping area has the same aero profile as the rest of the bar, instead of being round. This improves aerodynamics and, say Colnago, reduces stress at this point because of the greater contact area. The arm pads and extensions are adjustable for height, width and reach but the base-bar stays where it is. This reduces frontal area and allows the stem to always line up flush with the slightly downward sloping top tube.
The cabling is all completely internal, giving the K-Zero a very clean appearance. The frame is compatible with all brands of electronic and mechanical groupset.
The K-Zero is supplied as a module consisting of frame, forks, headset, stem, handlebar, extensions, seatpost and brake callipers. This bike was built up by the UK importers of Colnago and Vision components, Windwave. That’s why it’s built with Vision’s brand new 90mm wheels and Metron aero groupset – note the encased rear derailleur. In case you’re wondering, those are shifters on the bar extensions, not extra brake levers. Pull the lever to move the chain up, click the unit in to move down
Gears Vision Metron
Brakes TRP TTV
Wheels Vision Metron 90
Finishing kit K-Zero aero handlebar and stem, Vision Tri saddle
Price £3,499.95 (frame module)
For more information, please visit www.colnago.com
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