Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with Pedalsure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
FACT 12R is a lightweight and stiff carbon fibre that offers excellent levels of comfort.
Carbon clincher wheels, ideal for hilly terrain. They weigh 1248 grams and use a 33-millimetre deep rim.
Body Geometry technology used in the Power saddle offers both comfort and performance.
The semi-wireless electronic gears shift flawlessly, even under extreme pedalling load.
Specialized S-Works Aethos Dura-Ace Di2 Disc Road Bike 2022
Rather than being designed to win races, the Specialized S-Works Aethos Dura-Ace Di2 Disc Road Bike concentrates on offering a rich blend of ride feel, super low weight and bags of style to ensure every ride is fast, controlled and inspiring.
The frame shuns the harsh lines of aerodynamic kinks and bends and replaces them with traditional round tube sections that ooze class and style. The conventional round tube shape offers the best foundations for increasing stiffness and lowering weight, and when combined with Specialized's finest FACT 12r carbon and a refined layup schedule, a remarkable frame weight of 585 grams (size 56) and superb lateral stiffness is achieved. Moreover, the frame's sophisticated configuration balances this lateral stiffness with vertical compliance across its front and rear, leading to a heightened sensation of balance and poise.
Naturally, the S-Works Aethos scampers eagerly up the most brutal climbs, but this altitude consuming velocity is heightened further by the low rotational weight issued by the Roval Alpinist CLX wheelset and its lightweight full carbon rims. Generous clearance offered by the frameset allows these wheels to be dressed in 32mm wide tyres for extra plushness over harsh roads, while a frame geometry borrowed from the brand's Tarmac SL7 race bike positions the rider powerfully over the drivetrain.
A Shimano Dura-Ace R9200 12-speed setup delivers fast, precise gear changes via its semi-wireless electronic format, even when the rider is stomping unapologetically on the pedals. Additionally, a power meter is integrated into this drivetrain's cranks, allowing the rider to closely track their training performances and Strava KOM attempts. Hydraulic disc brakes complete the build and grant confidence-inspiring stopping power and control, even in the wet.
Read more about the bikes in our Specialized S-Works Aethos article.
- A superlight steed that blends ultimate ride feel, a super low weight and style
- The frame utilises a sophisticated layup of FACT 12r carbon to deliver exceptional lateral stiffness and a weight of just 585 grams (size 56)
- Traditional round tube shapes are subtly altered to further improve stiffness and balance while markedly improving durability
- The round tube shapes offer a classic aesthetic that oozes style
- A perfect balance of lateral stiffness and vertical compliance from front to rear guarantees exceptional ride quality and control
- Minimalist derailleur hangers and fork expander plug are small details that further shed grams
- A race-inspired geometry positions the rider powerfully over the pedals and affords accurate descending
- Clearance for up to 32mm wide tyres offers the opportunity of extra compliance and grip on poor roads
- Roval Alpinist CLX wheels ensure low rotating mass for lightning acceleration and consistent climbing speeds
- Shimano Dura-Ace R9100 12-speed, semi-wireless electronic gears shift flawlessly amongst a wide range of ratios
- A power meter integrated into the chainset allows accurate tracking of training and race performances
- Hydraulic disc brakes stop with power and control in all weather conditions
|Frame||Specialized S-Works Aethos FACT 12r Carbon, Rider First Engineered™, BSA threaded bottom bracket, Electronic cable routing only, 12x142mm thru-axle, flat-mount disc|
|Fork||Specialized S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc|
|Bottom Bracket||Shimano Dura-Ace, BB-R9100|
|Stem||Specialized S-Works SL, alloy, titanium bolts, 6-degree rise|
|Handlebar||Specialized S-Works Short & Shallow, 123mm Drop, 75mm Reach|
|Bar Tape||Supacaz Super Sticky Kush|
|Front Brake||Shimano Dura-Ace R9270, hydraulic disc|
|Rear Brake||Shimano Dura-Ace R9270, hydraulic disc|
|Brake Levers||Shimano Dura-Ace R9270, hydraulic|
|Front Derailleur||Shimano Dura-Ace R9250, braze-on|
|Rear Derailleur||Shimano Dura-Ace R9250, 12-speed|
|Shift Levers||Shimano Dura-Ace R9270, hydraulic disc|
|Chain||Shimano Dura-Ace, 12-speed|
|Cassette||Shimano Dura-Ace, 12-speed, 11-30t|
|Crankset||Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided power meter|
|Front Wheel||Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 21h, DT Swiss Aerolite spokes|
|Rear Wheel||Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 24h, DT Swiss Aerolite spokes|
|Front Tyre||Specialized Turbo Cotton, 320 TPI, 700x26mm, clincher|
|Rear Tyre||Specialized Turbo Cotton, 320 TPI, 700x26mm, clincher|
|Saddle||Specialized Body Geometry S-Works Power, carbon fibre rails, carbon fibre base|
|Seatpost||Roval Alpinist Carbon Seatpost|
|Pedals||Available to be purchased separately|
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.
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.