SHEET 125 OF 309 · Specialized · 2026 · endurance
Aethos 2 Expert - Shimano Ultegra Di2
Round-tube carbon road bike with Ultegra Di2, 28mm tyres and 35mm tyre clearance, 7.12kg claimed in size 56.
How it scores
Calculated from the published specifications below. See the formula.
- Comfort
- 47
- Speed
- 79
- Climbing
- 72
- Versatility
- 21
- Value
- 0
Full specification
✓ Specs checked against the manufacturer
Last checked 4 Sept 2026 against the manufacturer's own page . Caveat: Size 56 geometry row. Clearance is Specialized's stated 35mm for the Aethos 2 frame. The claimed weight is quoted as a tubeless set-up. Categorised as endurance on Specialized's own 'Performance Endurance' fit label for this bike, not race. Chainset is 52/36 with an 11-30 cassette. Specialized documents no mudguard or rack mounts, so both are recorded as absent. Specialized prints no model year on this page; 2026 reflects the current UK line-up as listed.
- Price (RRP)
- £5,499
- Frame
- carbon
- Groupset
- Shimano Ultegra Di2 R8170 2x12 electronic
- Shifting
- Electronic
- Weight
- 7.1 kg (claimed, size 56/M)
- Brakes
- Disc
- Stack / reach
- 580 / 391 mm (ratio 1.48)
- Tyre clearance
- 35 mm
- Stock tyres
- 28 mm
- Lowest gear
- 36×30 (32 gear inches)
- Mudguard mounts
- No
- Rack mounts
- No
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