Description
Specialized Aethos 2 Expert Ultegra Di2 Road Bike 2027
Pure road riding bliss meets modern engineering in the Specialized Aethos 2 Expert Ultegra Di2 Road Bike 2027. Stripping away unnecessary complexity and breaking traditional racing constraints, this machine is crafted around a featherweight seven hundred and five gram FACT ten r carbon frame designed to vanish beneath you on every climb, corner, and sprint. With a total weight of just seven point two seven kilograms, it delivers a transcendent, supple, and responsive ride feel that prioritises sheer joy over rigid regulations. Refined geometry based on extensive rider data ensures performance endurance comfort, while expanded tire clearance accommodates modern wide rubber to smooth out harsh tarmac. Equipped with high-performance thirty millimetre S-Works Turbo tyres, this bike redefines what a lightweight road machine can do, making sublime handling accessible for longer days in the saddle.
Effortless Electronic Precision and Carbon Performance
Powering every acceleration is the immaculate Shimano Ultegra Di2 twelve speed drivetrain. Delivering instantaneous, accurate electronic shifting at the touch of a button, this setup pairs a fifty-two thirty-six tooth crankset with an eleven thirty tooth cassette to provide seamless gear progression across rolling terrain and steep gradients. Hydraulic disc brakes offer consistent, confidence-inspiring stopping power regardless of weather conditions. Rolling on lightweight Roval C38 carbon wheels with a wide twenty-one millimetre internal rim width, the Aethos 2 transfers every watt of your power directly to the road with unmatched efficiency and tubeless-ready versatility.
Integrated Ergonomics for Transcendent Control
Every contact point of the Aethos 2 is meticulously selected to enhance comfort, control, and aesthetic elegance. The front end features a Roval Alpinist carbon handlebar paired with a Pro SL alloy stem and hidden cable routing, providing a clean cockpit alongside precise handling. A Roval Alpinist carbon seatpost works in harmony with the Body Geometry Power Expert saddle with hollow titanium rails to absorb road vibrations before they reach the rider. Wrapped in high-grip Supacaz Super Sticky Kush tape, this build balances refined ergonomics with understated style, making it the ultimate upgrade for cyclists who ride purely for the love of the road.
Technical Specification
| Frame | Aethos 2 FACT 10r Carbon, Rider First Engineered™, Threaded BB, Hidden Cable Routing, 12x142mm thru-axle, flat-mount disc |
| Fork | Aethos 2 FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc |
| Brakes | Shimano Ultegra BR-R8170 Hydraulic Brake |
| Bottom Bracket | Shimano Threaded BSA BB |
| Rear Derailleur | Shimano Ultegra Di2 R8150, 12-speed |
| Front Derailleur | Shimano Ultegra Di2 R8150, braze-on |
| Shift Levers | Shimano Ultegra Di2 R8170, hydraulic disc |
| Crankset | Shimano Ultegra R8100, 52/36t |
| Cassette | Shimano Ultegra, 12-speed, 11-30t |
| Chain | Shimano XT CN-M8100, 12-speed |
| Inner Tubes | 700x28-38mm, 48mm Presta valve |
| Front Wheel | Roval C38, 21mm internal width carbon rim |
| Rear Wheel | Roval C38, 21mm internal width carbon rim, tubeless ready |
| Tyres | S-Works Turbo, 700x30 |
| Saddle | Body Geometry Power Expert, hollow Ti rails |
| Handlebars | Roval Alpinist Carbon Handlebar, 125mm drop, 75mm reach |
| Seatpost | Roval Alpinist Carbon Seatpost |
| Stem | Roval Alpinist, alloy, 4 bolt, -6 degrees |
| Seat Binder | Specialized Alloy, 30mm |
| Tape | Supacaz Super Sticky Kush |
| Weight | 7.27 kg (56cm) |
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 Aethos 2 Expert Ultegra Di2 Road Bike 2027 Sizing
Delivery & Returns
Reviews
Unable to display Reviews due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Q&A
Unable to display Q&A due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
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 42% 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.