Why this one
Not everything needs a motor. The Aethos is Specialized’s purist road bike: a FACT carbon frame built around the simple idea that a bicycle should feel alive under you, and Shimano Ultegra Di2 — electronic shifting one tier below Dura-Ace, with essentially the same instant, silent precision. This is the bike for the rider whose legs are the engine and who wants equipment worthy of the effort.
What actually matters on this bike
The groupset
Shimano Ultegra Di2. Electronic shifting means every gear change is identical — a soft click at the lever, an instant response at the derailleur, whether you are fresh on the flat or cross-eyed on a 15% ramp. Once you have ridden Di2, cables feel like history.
The frame
Specialized’s FACT carbon, in the Aethos shape — a frame designed around ride feel rather than marketing categories. It is the kind of chassis that disappears beneath you: responsive when you stand on the pedals, composed on fast descents, comfortable at hour four.
What it is like to ride
Light, quick and direct — the Aethos rewards every watt you put in and asks nothing back. It climbs the way you imagine climbing should feel and descends with the assurance of a properly engineered carbon frame. This is road cycling distilled to the good parts.
How it compares
Swipe the table sideways to see the other bikes.
 Specialized Aethos 2 ExpertThis bike |
 Cube Agree C:62 Pro |
 Cube Agree C:62 EX |
 Cube Attain C:62 SLX |
|
|---|---|---|---|---|
| Price | £5,499.00 | £3,399.00 | £3,099.00 | £2,099.00 |
| Type | Road bike | Road bike | Road bike | Road bike |
| Frame | FACT carbon | C:62 carbon | C:62 carbon | C:62 carbon |
| Drivetrain | Shimano Ultegra Di2 | — | — | — |
Full specification
| Type | Road bike |
|---|---|
| Intended use | Performance Road Riding |
| Frame | FACT carbon |
| Drivetrain | Shimano Ultegra Di2 |
| Colour | Gloss Dolomite Metallic / Blue Pearl over Shadow Silver |
| Frame sizes | XS, S, M, L, XL |
Questions about buying a bike from us
How assembled does it arrive?
Around 90% built. The front wheel, handlebars, pedals and seatpost need fitting, which takes most people about twenty minutes with the tools in the box. Gears and brakes are set up before it leaves us.
Can I return it if it is the wrong size?
Yes, unridden, within 30 days. Once a bike has been ridden outdoors it is a used bike and we can only take it back if something is wrong with it. Send us your height and inside leg first and we will confirm the frame size in writing — that is free and it takes an hour.
What warranty does the frame carry?
The manufacturer’s own, registered to you at no cost when the bike ships. Terms differ between Specialized and Cube and between frame materials, so we will not summarise them into one number here; ask and we will send the exact terms for this model.
Can I pay by finance or Cycle to Work?
No. Neither is available here. If that is how you were planning to buy, buy elsewhere — we would rather tell you now.
Can I test ride one first?
Not with us — we are online only with no demo fleet. Specialized and Cube dealers run demo days; the size you settle on there is the one we will supply.
Do I need to run it in?
New cables and spokes bed in over the first few rides, so gears can drift slightly out of tune in the first month. Any bike shop will re-index them in a few minutes. It is normal on every new bike, not a fault.
Kit it out
Bikepacking luggage straps to the frame, so it works on a bike with no rack mounts — which is most of these.
