Specialized S-Works Aethos Dura Ace Di2 2021 - Road Bike
Don’t get us wrong, we’re all for racing. Grand Tour top steps, Classic’s Monuments—they’re in our DNA. But sometimes riding simply to ride, riding for the love of riding, is just what we need. And this is what the Specialized S-Works Aethos Dura Ace Di2 lives for. Sure, it’s given nothing up to performance, and happens to be the lightest frame out there, but with no compromise to style. Aethos: Billions of calculations in the pursuit of one thing—the perfect ride.
Key Features:
- FACT 12r carbon frame offers the ultimate ride feel
- S-Works FACT carbon fork with thru axle for more control
- Shimano Dura-Ace Di2 2x11 speed drivetrain for slick electronic shifting
- Shimano Dura-Ace hydraulic disc brakes for consistent speed control
- Colours: Chameleon Red/Gold Bronze
- Sizes: 44cm, 49cm, 52cm, 54cm, 56cm, 58cm, 61cm
- The Specialized S-Works Aethos Dura-Ace Di2 is available with 0% APR finance
• The Aethos frame has been designed with the perfect combination of ultimate ride feel, light weight, and style—from accelerating up steep pitches and descending technical descents, to all-day saddle comfort on even the longest coffee rides, the Aethos hits the mark. But how, you ask? By reinventing the traditional road shape found on bikes of the past, we’ve subtly altered these shapes to deliver massive gains in stiffness and balance, all without affecting weight or durability. Pair that with an entirely-new layup and process that we’ve perfected over multiple decades and you have the lightest frame out there (585 grams, S-Works, size 56cm). The Aethos is
more than just a new bike, it’s the first of a new breed.
• A featherweight frame is useless without confidence-inspiring ride characteristics, which is why we’ve developed the Aethos to have the perfect balance of front and rear stiffness combined with exceptional ride quality. By studying the flexing and breathing of carbon fiber, we were able to discover groundbreaking findings about how forces flow through frames. Just a few pedal strokes and you’ll realize this sublime ride sets a new standard.
• Every detail, from the derailleur hangers to the fork expander plug have been designed with style, weight, and durability in mind. We’ve also spec’d it with Roval’s all-new Alpinist carbon seatpost and wheels, further saving weight and improving ride characteristics. Everything in pursuit for the perfect ride.
All Tredz bikes are:
- Fully built & ready to ride
- Fully checked & tested by Cytech qualified mechanics
- Available with 0% APR finance on any basket over £99
- UK price match guarantee
- 365 day no hassle returns
- Free delivery in the UK Mainland on a date that suits you
In the box with every Tredz bike is:
- Free Tredz 9 key trail tool
- Free Tredz pedal spanner
- Free basic pedals
- Tredz drawstring kit bag
- 16 point quality control check sheet
- Basic bike setup instructions
- Free Cycle Plan insurance voucher
Occasionally, without notice, manufacturers change product design and/or specifications.
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 |
Stem | S-Works SL, alloy, titanium bolts, 6-degree rise |
Bars | S-Works Short & Shallow |
Front Brake | Shimano Dura-Ace R9170, hydraulic disc |
Rear Brake | Shimano Dura-Ace R9170, hydraulic disc |
Front Mech | Shimano Dura-Ace Di2 R9150, braze-on |
Rear Mech | Shimano Dura-Ace Di2 R9150, 11-speed |
Shifters | Shimano Dura-Ace Di2 Disc R9170 |
Speed | 22 |
Rims | Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered |
Front Hub | Roval AFD hub, 21h |
Rear Hub | Roval AFD hub, 24h |
Spokes | DT Swiss Aerolite spokes |
Front Tyre | Turbo Cotton, 320 TPI, 700x26mm |
Rear Tyre | Turbo Cotton, 320 TPI, 700x26mm |
Seat Post | Roval Alpinist Carbon Seatpost |
Saddle | Body Geometry S-Works Power, carbon fiber rails, carbon fiber base |
Chainset | Shimano Dura-Ace R9100, HollowTech 2, 11-speed, Dual-sided Powermeter, 52/36T |
Bottom Bracket | Shimano Dura-Ace, BB-R9100 |
Chain | Shimano Dura-Ace, 11-speed |
Cassette | Shimano Dura-Ace R9100, 11-speed, 11-30t |
Specailized Aethos 2021 Size Chart
Size |
Height (cm) |
Height (inches) |
44 |
142 - 155 |
4’8 – 5’1” |
49 |
155 - 163 |
5’1 – 5’4” |
52 |
163 - 170 |
5’4 – 5’7” |
54 |
170 - 175 |
5’7 – 5’9” |
56 |
175 - 180 |
5’9 – 5’11” |
58 |
180 - 188 |
5’11 – 6’2” |
61 |
188 - 196 |
6’2 – 6’5” |
Specialized Aethos 2021 Geometry
49 |
52 |
54 |
56 |
58 |
61 |
|
Crank length |
165mm |
170mm |
172.5mm |
172.5mm |
175mm |
175mm |
Stem length |
80mm |
90mm |
100mm |
100mm |
110mm |
110mm |
Seatpost length |
300mm |
300mm |
360mm |
360mm |
360mm |
360mm |
Saddle width |
155mm |
155mm |
143mm |
143mm |
143mm |
143mm |
Handlebar width |
380mm |
400mm |
420mm |
420mm |
440mm |
440mm |
Reach |
375mm |
380mm |
384mm |
395mm |
402mm |
408mm |
Top tube length, horizontal |
508mm |
531mm |
540mm |
562mm |
577mm |
595mm |
Stack |
514mm |
527mm |
544mm |
565mm |
591mm |
612mm |
Wheelbase |
973mm |
975mm |
978mm |
991mm |
1005mm |
1012mm |
Chainstay length |
410mm |
410mm |
410mm |
410mm |
410mm |
410mm |
Front center |
574mm |
577mm |
579mm |
591mm |
606mm |
613mm |
Bb drop |
74mm |
74mm |
72mm |
72mm |
72mm |
72mm |
Bb height |
266mm |
266mm |
268mm |
268mm |
268mm |
268mm |
Seat tube angle |
75.5° |
74° |
74° |
73.5° |
73.5° |
73° |
Head tube angle |
71.75° |
72.5° |
73° |
73.5° |
73.5° |
74° |
Seat tube length |
431mm |
462mm |
481mm |
504mm |
532mm |
567mm |
Head tube length |
109mm |
120mm |
137mm |
157mm |
184mm |
204mm |
Bike standover height |
705mm |
728mm |
748mm |
769mm |
796mm |
824mm |
Fork rake/offset |
47mm |
47mm |
44mm |
44mm |
44mm |
44mm |
Fork length, full |
369mm |
369mm |
369mm |
369mm |
369mm |
369mm |
Trail |
63mm |
58mm |
58mm |
55mm |
55mm |
52mm |
What size frame do I need if I am between sizes? - read here
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