Description
Specialized S-Works Aethos 2 Dura-Ace Di2 Road Bike 2026
The Specialized S-Works Aethos 2 Road Bike is the lightest road bike ever produced, but its purpose is not medals or rules. It was created to free the rider, delivering a pure and timeless riding experience where effort disappears and rider and machine move as one.
S-Works Aethos 2 Refined Geometry
The Aethos 2 refines geometry, increases tyre clearance, and introduces new Roval components while retaining the sublime ride feel that defined the original. Every improvement was made to extend the experience to more riders without compromise. Drawing on decades of Body Geometry data, the Aethos 2 offers a fit that suits more riders than ever. A taller stack, longer wheelbase, slacker head tube, and lower bottom bracket combine for stable handling, greater comfort, and improved control.
Specialized Flow State Design
Born from the discovery of how frames flex under load, Flow State Design optimises tube shapes rather than adding stiffness layers. The result is a lighter frame with improved ride quality, greater structural integrity, and unmatched durability.
Specialized Aethos 2 Greater Clearance
The Aethos 2 clears 35 mm tyres with ease, adding versatility and comfort without increasing weight. Achieving this required an entirely new carbon layup, perfected through countless refinements for the most elegant ride yet.
Roval Alpinist Components
The updated Alpinist cockpit and wheels complement the Aethos perfectly. At just 270 g, the Alpinist Cockpit II is more ergonomic, comfortable, and responsive, while the Alpinist CLX III wheels are lighter, stronger, and more durable.
Specialized Aethos 2 Lightness with Strength
Despite its feathery weight of 705 g, the frame endures testing far beyond industry standards, withstanding over 100,000 pedal strokes at 2,377 watts without issue. Lightness meets strength in perfect balance.
Technical Specification
| Frame | S-Works Aethos 2 FACT 12r Carbon, Rider First Engineered, Threaded BB, Hidden Cable Routing, 12x142mm Thru-Axle, Flat-Mount Disc |
| Fork | S-Works Aethos 2 FACT 12r Carbon, 12x100mm Thru-Axle, Flat-Mount Disc |
| Front Brake | Shimano Dura-Ace BR-R9270, Hydraulic Disc |
| Rear Brake | Shimano Dura-Ace BR-R9270, Hydraulic Disc |
| Shift Levers | Shimano Dura-Ace Di2 R9270, Hydraulic Disc |
| Front Derailleur | Shimano Dura-Ace Di2 R9250, Braze-On |
| Rear Derailleur | Shimano Dura-Ace Di2 R9250, 12-Speed |
| Cassette | Shimano Dura-Ace, 12-Speed, 11-30t |
| Chain | Shimano XTR M9100, 12-Speed w/ Quick Link |
| Crankset | Shimano Dura-Ace R9200, HollowTech II, 12-Speed with 4iiii Precision Pro Dual-Sided Powermeter, 52/36t |
| Bottom Bracket | Shimano Dura-Ace BB-R9100 |
| Front Wheel | Roval Alpinist CLX III, Tubeless, 33mm Depth, 26.5mm Width, 21mm Internal Width Carbon Rim, Roval LF21-F 21H Hub with Sinc Ceramic Bearings, Roval by ARRIS Composite Aero Spoke with Ti End Fittings |
| Front Tyre | S-Works Turbo TLR Race Tire, 700x28c |
| Rear Wheel | Roval Alpinist CLX III, Tubeless, 33mm Depth, 26.5mm Width, 21mm Internal Width Carbon Rim, Roval LF19-R 24H Hub with Sinc Ceramic Bearings, Roval by ARRIS Composite Aero Spoke with Ti End Fittings |
| Rear Tyre | S-Works Turbo TLR Race Tire, 700x28c |
| Inner Tubes | 700x25-35, 50mm Presta Valve, TPU |
| Handlebars | Roval Alpinist Cockpit II, Integrated Bar/Stem |
| Tape | Supacaz Super Sticky Kush |
| Saddle | S-Works Power with Mirror |
| Seatpost | Roval Alpinist Carbon Seatpost, Light Weight Clamp |
| Seat Binder | Specialized Alloy, 30.0mm, Titanium Bolt |
| Claimed Weight | 6.05 kg (13 lb 5.4 oz) |
| Weight Size | 56 |
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.
Size Guide
Specialized S-Works Aethos 2 Dura-Ace Di2 Road Bike 2026 Sizing
Delivery & Returns
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