Argon 18 SUM Pro Dura Ace Di2 Road Bike
The Argon 18 SUM Dura Ace Di2 Road Bike provides an uncompromising advantage on climbs, sprints, and straightaways, leaving only one question: how much mercy will you show your rivals?
Engineered with a rider-focused design, the frame balances responsiveness and stability, offering a ride quality that outperforms most aero frames. The Sum's carefully crafted layup optimises aerodynamics while minimising weight. The innovative aero profile tube shapes eliminate unnecessary material, ensuring maximum power transfer for exceptional efficiency.
3D System
Achieve the perfect fit without compromising safety, steerer stiffness, or aesthetics with Argon 18's 3D Technology.
Road Race Geometry
Designed to deliver razor-sharp reflexes and precision handling, this geometry meets the needs of racers at all levels.
Topological Compliance System
Using a proprietary design process, this system provides outstanding vertical compliance and reduces road vibrations while retaining maximum stiffness. Each bike with TCS technology is individually analysed to optimise frame topology and carbon layup.
Argon Fit System
With size-specific geometries, Argon 18's fit system guarantees optimal performance and positioning for all riders, ensuring no one is left behind.
Elite Level Layup
Argon 18's Elite-level bikes are crafted with the same attention to detail as their Pro-level counterparts, delivering superior performance without compromise.
Technical Specification
| Frame | SUM Pro |
| Fork | SUM Pro specific |
| Headset | FSA Headset NO.55R 1.5'' + 3D |
| Integrated Cables | Yes |
| Wheels | Scope Artech A4 |
| Tyres | Challenge Criterium RS TLR 28c Black |
| Tyre Clearance | 30C (32mm) |
| Bottom Bracket | CeramicSpeed BB86 Shimano Coated |
| Front Derailleur | Shimano Dura-Ace Di2 R9250 |
| Rear Derailleur | Shimano Dura-Ace Di2 R9250 |
| Crankset | Shimano Dura-Ace R9200 52/36 |
| Chain | Shimano Dura-Ace CN-M9100 12S |
| Cassette | Shimano Dura-Ace CS-R9200 11-30 |
| Brakes | Shimano Dura-Ace Di2 R9270 |
| Brake Levers | Shimano Dura-Ace Di2 R9270 |
| Rotors | Shimano Dura-Ace RT-MT900 / F |
| Shifters | Shimano Dura-Ace Di2 R9270 |
| Handlebar | Vision Metron 5D ACR EVO |
| Bar Tape | Ciclovation LEATHER TOUCH Tornado Gloss |
| Saddle | Repente Quasar CR Carbon Rail |
| Seatpost | SUM specific |
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 SUM Pro Dura Ace Di2 Road Bike Sizing
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