Argon 18 Krypton Pro Ultegra Di2 Road Bike
Higher performance, more features, and ready for more roads and miles. Designed for speed and comfort across all surfaces, the all-new Argon 18 Krypton Pro Ultegra Di2 Road Bike offers increased tyre clearance for versatility, a downtube storage compartment for tools and gear, and shorter chainstays for a more responsive ride.
3D System
The 3D System provides an ideal fit without compromising safety, steerer stiffness, or design. By extending the headtube, it offers a broader range of positioning options to accommodate the handlebar stack height preferences of every rider. With up to three head tube extension heights per frame size, it eliminates the stiffness loss typically associated with traditional spacers, ensuring precise handling in all positions. The streamlined design, featuring custom 3D caps for each extension height, showcases meticulous attention to detail and refined aesthetics.
Storage Optimisation System
An innovative layup design that provides access to tube space for integrated equipment and nutrition storage.
Endurance Geometry
The endurance geometry delivers a stable and comfortable ride with a relaxed rider position, while staying true to its performance heritage.
Topological Compliance System
A proprietary design method provides exceptional vertical compliance and dampens road-induced vibrations while maintaining maximum stiffness. Each bike model featuring TCS technology is individually analysed to optimise frame topology and carbon layup.
Argon Fit System
Optimised to enhance performance and positioning across all sizes, the geometry is carefully adjusted for each frame size, ensuring a perfect fit for every rider.
Technical Specification
| Frame | Krypton Pro |
| Fork | Krypton Pro |
| Headset | FSA No.69 SRS + 3D |
| Integrated Cables | Yes |
| Storage Optimisation System | Yes |
| Wheels | Hunt 44 Aerodynamics Disc Wheelset |
| Tyres | Vittoria Corsa Control TLR G2.0 700x30c |
| Tyre Clearance | Up to 43mm |
| Bottom Bracket | Token T47 BB |
| Front Derailleur | Shimano Ultegra Di2 R8150 |
| Rear Derailleur | Shimano Ultegra Di2 R8150 |
| Crankset | Shimano Ultegra R8100 52/36 |
| Chain | Shimano Ultegra CN-M8100 12S |
| Cassette | Shimano Ultegra CS-R8100 11-30 |
| Brakes | Shimano Ultegra Di2 R8150 |
| Brake Levers | Shimano Ultegra Di2 R8150 |
| Rotors | Shimano Ultegra RT-CL800 / F |
| Shifters | Shimano Ultegra Di2 R8170 |
| Handlebar | FSA SL-K SCR Compact |
| Stem | FSA OS-99 |
| Bar Tape | Ciclovation Leather Touch Tornado Gloss |
| Saddle | Repente Prime 3.0 |
| Seatpost | Argon 18 TDS-C |
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.
Argon 18 Krypton Pro Ultegra Di2 Road Bike Sizing
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".
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.