Argon 18 SUM 105 Di2 Road Bike
The Argon 18 SUM 105 Di2 Road Bike offers a flat-out advantage on climbs, sprints, and straightaways, the only question is how much mercy to show your competitors.
A rider-focused design ensures a frame that is both responsive and stable, delivering a ride quality that surpasses most aero frames. The Sum’s layup is meticulously engineered to optimise aerodynamics while minimising weight. Its new aero profile tube shapes strip away excess material, maintaining maximum power transfer for a truly efficient ride.
3D System
Achieve the ideal fit without compromising safety, steerer stiffness, or the aesthetics of your bike with Argon 18's 3D Technology.
Road Race Geometry
Designed for razor-sharp reflexes and precision handling, our road race geometry meets the demands of racers at every level.
Topological Compliance System
A proprietary design method providing exceptional vertical compliance and reduced road-induced vibrations, while retaining maximum stiffness. Each bike featuring TCS technology undergoes individual analysis to optimise frame topology and carbon layup.
Argon Fit System
With size-specific geometries, Argon 18's fit system ensures optimal performance and positioning for riders of all sizes, leaving no cyclist behind.
Elite Level Layup
Crafted for the discerning cyclist, our Elite-level bikes receive the same meticulous attention to detail as our Pro-level models, offering more than just trickle-down technology.
Technical Specification
| Frame | SUM |
| Fork | SUM specific |
| Headset | FSA Headset NO.55R 1.5'' + 3D |
| Integrated Cables | Yes |
| Wheels | Scope S4.A |
| Tyres | Vittoria Corsa N.EXT TLR 28mm |
| Tyre Clearance | 30C (32mm) |
| Bottom Bracket | BB Ultegra SM-BB72 |
| Front Derailleur | Shimano 105 Di2 R7150 |
| Rear Derailleur | Shimano 105 Di2 R7150 |
| Crankset | Shimano 105 FC-R7100 52/36 |
| Chain | Shimano 105 CS-R7100 11-34 |
| Cassette | Shimano 105 CS-R7100 11-34 |
| Brakes | Shimano 105 Di2 R7170 |
| Brake Levers | Shimano 105 Di2 R7170 |
| Rotors | Shimano SM-RT70 / F |
| Handlebar | FSA Energy SCR Compact |
| Stem | FSA SMR-II |
| Bar Tape | Ciclovation LEATHER TOUCH Tornado Gloss |
| Saddle | Repente Quasar |
| 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 105 Di2 Road Bike Sizing
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