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.
Argon 18 Nitrogen Ultegra R8050 Di2 Road Bike 2018
Argon 18's Nitrogen family is renowned for superior aerodynamic performance - and the Nitrogen Ultegra R8050 Di2 Road Bike is no different. Topped only by the Nitrogen Pro in Argon's line-up, this is a thoroughbred aero machine, built around a lightweight carbon frame that has been developed specifically for cutting through the air. This bike boasts Argon's 3D headset unit which, coupled with the fully internal cable routing, helps with aerodynamic performance and lends the bike a smooth, clean aesthetic. The Nitrogen's brake calipers are carefully placed behind the seat stays and chain stays in order to hide them from the wind, a further boon to the bike's already outstanding aero credentials.
Shifting is taken care of by Shimano's Ultegra Di2 groupset, lending the bike the flawless and precise gear shifting that electronic groupsets are renowned for. Vision's TriMax 30 wheelset is a solid and dependable option which, paired with the Vittoria Rubino tyres, will keep you rolling at speed all day long. The package is rounded out with a carbon aero seatpost and a comfy saddle from Italian manufacturers Prologo.
FEATURES:
- Frame has been optimised for aerodynamic performance
- Internal cable routing for clean aesthetic and seamless user-experience
- Ultegra Di2 groupset gives incredible shifting performance
- Argon 18 3D headset provides a range of customisation to suit any rider
Note: Image shown for representation of colour way only, specification subject to change at any time. Bicycles do not come with pedals unless otherwise specified.
Technical Specification
| FRAME | Argon 18 HM6003 carbon frame, Nanotech tubing |
| FORK | Argon 18 carbon fork |
| HEADSET | FSA 39 + 3D 1" 1/2 |
| STEM | FSA Energy, alloy |
| HANDLEBARS | FSA Energy, alloy |
| BAR TAPE | Black |
| FRONT BRAKE | TRP TKB137-2 |
| REAR BRAKE | TRP TKB138-2 |
| FRONT DERAILLEUR | Shimano Ultegra R8050 Di2, braze-on |
| REAR DERAILLEUR | Shimano Ultegra R8050 Di2 |
| SHIFT LEVERS | Shimano Ultegra R8050 Di2 |
| CASSETTE | Shimano Ultegra R8000, 11-28 |
| CHAIN | Shimano Ultegra HG700 |
| CRANKSET | Shimano Ultegra R8000, 52/36 |
| BOTTOM BRACKET | Shimano, BB Press Fit, SM-BB71-41B |
| PEDALS | NA |
| FRONT WHEEL | Vision TriMax 30 |
| REAR WHEEL | Vision TriMax 30 |
| FRONT TYRE | Vittoria Rubino Pro 700x25mm |
| REAR TYRE | Vittoria Rubino Pro 700x25mm |
| SADDLE | Prologo New Nago Evo (Tirox) |
| SEATPOST | Argon 18, ASP-5050 carbon, aero |
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.
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