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.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to claim.
Specialized S-Works Aethos Etap Road Bike
The Specialized Aethos frame is a revolutionary design that combines a superior riding experience, lightweight construction, and stylish aesthetics. It has been meticulously engineered to excel in various cycling scenarios, whether it's climbing steep inclines, navigating challenging descents, or providing comfortable long-distance rides. To achieve this, the traditional road bike shape has been reimagined, subtly modifying its geometry to enhance stiffness and balance without compromising weight or durability.
One of the key factors that sets the Aethos apart is its exceptionally low weight. With a weight of only 585 grams for the S-Works model in size 56cm.This achievement has been made possible through an entirely new carbon layup process that has been honed and perfected over many years.
However, a featherweight frame alone is not enough. The Aethos has been meticulously crafted to deliver a ride that inspires confidence. It strikes the perfect balance between front and rear stiffness, ensuring optimal power transfer while maintaining exceptional ride quality. By deeply studying how carbon fiber flexes and behaves under various forces, groundbreaking insights have been gained, resulting in a ride experience that sets a new industry standard.
Every aspect of the Aethos has been carefully considered, right down to the smallest details. Components such as the derailleur hangers and the fork expander plug have been designed with a focus on style, weight reduction, and durability. The inclusion of Roval's new Alpinist carbon seatpost and wheels further contributes to weight savings and enhances the overall ride characteristics. Every element of the Aethos has been meticulously engineered in pursuit of the perfect ride.
Overall, the Aethos represents not just a new bike, but the inception of a new generation of bicycles. Its combination of lightweight construction, exceptional ride quality, and attention to detail sets it apart as a truly groundbreaking offering in the world of cycling.
Technical Specification
| Frame | S-Works Aethos FACT 12r Carbon, Rider First Engineered™, Threaded BB, Electronic cable routing only, 12x142mm thru-axle, flat-mount disc |
| Fork | S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc |
| Saddle | Body Geometry S-Works Power, carbon fiber rails, carbon fiber base |
| SeatPost | Roval Alpinist Carbon Seatpost |
| Stem | S-Works SL, alloy, titanium bolts, 6-degree rise |
| Handlebars | S-Works Short & Shallow, 125mm Drop, 75mm Reach w/Di2 Hole |
| Seat Binder | Specialized Alloy, 30.0mm, titanium bolt |
| Tape | Supacaz Super Sticky Kush |
| Rear Brake | SRAM Red eTAP AXS, hydraulic disc |
| Front Brake | SRAM Red eTAP AXS, hydraulic disc |
| Bottom Bracket | SRAM DUB BSA 68 |
| Chain | SRAM RED 12-speed |
| Crankset | SRAM RED AXS Power Meter |
| Cassette | SRAM RED XG-1290, 12-speed, 10-33t |
| Rear Derailleur | SRAM RED eTAP AXS, 12-speed |
| Front Derailleur | SRAM RED eTAP AXS, braze-on |
| Shift Levers | SRAM Red eTap AXS |
| Chainrings | 48/35T |
| WHEELS & TIRES | Inner Tubes, 700x20-28, 48mm Presta Valve |
| Front Wheel | Roval Alpinist CLX, Tubeless, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 21h, DT Swiss Aerolite spokes |
| Rear Wheel | Roval Alpinist CLX, Tubeless, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 24h, DT Swiss Aerolite spokes |
| Front Tire | S-works Turbo 2BR, 700x28mm |
| Rear Tire | S-works Turbo 2BR, 700x28mm |
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.
Specialized S-Works Aethos Etap Road Bike Sizing
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