Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to claim.
Colnago K-Zero Ex-Team Ultegra TT Bike 53cm
Ridden to multiple wins and utilising a wide array of technological advance features, the Colnago K-Zero Ex-Team Ultegra TT Bike 53cm is the ideal choice for time trialists looking for their next speed enhancing ride. Constructed from a supremely low weight monocoque carbon fibre, and enhancing a tube shaping that cuts through the wind and keeps you incredibly efficient over long distances, everything about this bike has been designed to perform.
The frame and fork work beautifully together to reduce any waste of energy, and the stretched out geometry with an integrated K-Zero aerobar setup ensures you can lay down the power without the wind holding you back. The stem features a plastic cover that streamlines aerodynamics, eliminating any wind divoting into the holes and creating drag, and even the integrated brakes which sit behind both the fork and remain nestled in amongst the seat tube and chainstay enhance efficiently.
Staying strong and offering a wide range of gearing to keep you powering along the flats and up the gentle gradients of the course, Shimano’s Ultegra 6800, 11-speed gearing is the ideal choice. It never skips a beat, meaning you won’t miss the gear change or lose time after putting in your best effort.
Furthering efficiencies, Mavic’s Cosmic Carbone R-SYS wheelset keeps you cutting through the wind like a hot knife through butter. These wheels feature an 80mm rim depth which stay incredibly strong when you lay down the power, and are connected to Mavic Yksion PowerLink tubular tyres for reduced rolling resistance and enhance puncture protection.
Features
- Ex-team bike ridden to multiple victories
- Monocoque carbon construction is lightweight and shaped to be as efficient as possible
- TRP integrated brakes produce supreme stopping power for late braking into the corners
- Shimano Ultegra 6800, 11-speed gearing gives a wide range of spin for the harshest of courses
Please note: This is an ex-team bike, available in size 53cm only, and features some signs of use to various areas of the bike. Most notable is the residue of a sticker on the aero seat post. This bike is sold as is.
Technical Specification
| FRAME | Colnago K-Zero TT Bike, monocoque carbon |
| FORK | Colnago K-Zero Aero Integrated |
| HEADSET | Colnago integrated, 1 1/8 “ |
| AEROBAR | Colnago K-Zero carbon integrated |
| STEM | Colnago K-Zero carbon integrated |
| BRAKE LEVERS | Shimano T778 |
| FRONT BRAKE | TRP integrated, Profile Design brake blocks |
| REAR BRAKE | TRP integrated, Profile Design brake blocks |
| SHIFT LEVERS | Shimano M5, aerobar |
| FRONT DERAILLEUR | Shimano Ultegra 6800, braze-on, 53-39 |
| REAR DERAILLEUR | Shimano Ultegra 6800, 11-speed |
| CASSETTE | Shimano Ultegra 6800, 11-28t |
| BOTTOM BRACKET | 68mm - English Threaded |
| FRONT WHEEL | Mavic Cosmic Carbone R-SYS, 80mm depth, tubular |
| REAR WHEEL | Mavic Cosmic Carbone R-SYS, 80mm depth, tubular |
| FRONT TYRE | Mavic Yksion PowerLink, 28-32mm, tubular |
| REAR TYRE | Mavic Yksion PowerLink, 28-32mm, tubular |
| SEATPOST | Colnago aero |
| SADDLE | Specialized Body Geometry Sitero TT saddle |
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
Unable to display Reviews due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Unable to display Q&A due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".