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The Aethos line promises three things—exceptional light weight, perfectly-balanced ride characteristics, and undeniable style—and this Aethos pro is no exception.
The Aethos line promises three things—exceptional light weight, perfectly-balanced ride characteristics, and undeniable style—and this Aethos pro is no exception.
Specialized

Specialized Aethos Pro Ultegra Di2 Road Bike 2023 in Obsidian/Chaos Granite/Birch

£4,995.00 £8,200.00 39% off
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Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

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Online or in-store purchases can be returned to any of our 12 stores free of charge or can be returned by post or courier at your cost after completing the online returns form below. If you are returning an item due to a fault, we will refund your postage costs.

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If you wish to return a bike or bulky item to us, please keep the box it arrived in and let us know by contacting our support team via our online webchat, email or by phone (020 45063856) and we will help arrange a collection.

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Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Specialized Aethos Pro Ultegra Di2 Road Bike 2023 in Obsidian/Chaos Granite/Birch

Season:2024

Brand:Specialized

Code:396083352653

The Aethos line promises three things—exceptional light weight, perfectly balanced ride characteristics, and undeniable style—and this Aethos pro is no exception. Aethos: Billions of calculations in the pursuit of one thing—the perfect ride.

Spec’d with Shimano's Ultegra Di2 that delivers clean, crisp shifts and Roval’s Alpinist wheels mated to DT Swiss 350 hubs and you're left with a no-fuss build that delivers, mile after mile.

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, Specialized 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 they’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 Specialized 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 fibre, they 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. They’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.

Key Features & Benefits:

  • Fact 10r Carbon frame:Lightweight and lively for the best all-round road bike ever designed.
  • Shimano Hydraulic disc brakes:Stop faster, by spending less time on the brakes your average speed will increase for no extra effort.
  • Shimano Ultegra Di2 24 speed groupset:Precise and reliable electronic shifting with a wide range of gears for any climb or descent.

Full Specification:

  • Frame:Aethos FACT 10R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc
  • Fork:FACT Carbon, 12x100mm thru-axle, flat-mount disc
  • Number of Gears:24
  • Gear Shifters:Shimano Ultegra R8170, hydraulic disc
  • Chainset:Shimano Ultegra R81000
  • Rear Cassette:Shimano Ultegra, 12-speed, 11-30t
  • Chain:Shimano M8100, 12-speed w/ quick link
  • Front Derailleur:Shimano Ultegra R8150, braze-on
  • Rear Derailleur:Shimano Ultegra R8150, 12-speed
  • Bottom Bracket:Shimano Threaded BSA BB
  • Pedals:Not supplied:Shop pedals here
  • Rims:Roval Alpinist CL, Tubeless, 21mm internal width carbon rim, 33mm depth, Wind Tunnel Engineered
  • Front Hub:DT for Roval 350 hub, DT Swiss Aerolite spokes
  • Rear Hub:DT for Roval 350 hub, DT Swiss Aerolite spokes
  • Front Tyre:S-works Turbo 2BR, 700x28mm
  • Rear Tyre:S-works Turbo 2BR, 700x28mm
  • Brakes:Shimano Ultegra R8170, hydraulic disc
  • Handlebars:S-Works Short & Shallow, 125mm Drop, 75mm Reach w/Di2 Hole
  • Handlebar Tape:Supacaz Super Sticky Kush
  • Headset:N/A
  • Stem:Specialized Pro SL, alloy, 4-bolt
  • Saddle:Body Geometry Power Pro, hollow titanium rails
  • Seatpost:Roval Alpinist Carbon Seatpost
  • Accessories:Shimano 105 Di2 Charger
  • Weight:6.93kg (15 lb, 4.4 oz)
Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.

Sizing Guide For Specialized Aethos

Frame Size (cm)Height (cm)Height (Inches)
49155 - 1635'1"- 5'4"
52163 - 1705'4" - 5'7"
54170 - 1755'7" - 5'10"
56175 - 1835'9" - 6'0"
58180 - 1885'11" - 6'2"
61188 - 1966'2" - 6'5"

Geometry Information For SpecializedAethos

495254565861
Crank Length165mm170mm172.5mm172.5mm175mm175mm
Handlebar Width380mm400mm420mm420mm440mm440mm
Stem Length80mm90mm100mm100mm110mm110mm
Saddle Width155mm155mm143mm143mm143mm143mm
Seatpost Length300mm300mm360mm360mm360mm360mm
Stack514mm527mm544mm565mm591mm612mm
Reach375mm380mm384mm395mm402mm408mm
Head Tube Length109mm120mm137mm157mm184mm204mm
Head Tube Angle71.75°72.5°73°73.5°73.5°74°
BB Height266mm266mm268mm268mm268mm268mm
BB Drop74mm74mm72mm72mm72mm72mm
Trail63mm58mm58mm55mm55mm52mm
Fork Length, Full369mm369mm369mm369mm369mm369mm
Fork Rake/Offset47mm47mm44mm44mm44mm44mm
Front Center574mm577mm579mm591mm606mm613mm
Chainstay Length410mm410mm410mm410mm410mm410mm
Wheelbase973mm975mm978mm991mm1005mm1012mm
Top Tube Length, Horizontal508mm531mm540mm562mm577mm595mm
Bike Standover Height705mm728mm748mm769mm796mm824mm
Seat Tube Length431mm462mm481mm504mm532mm567mm
Seat Tube Angle75.5°74°74°73.5°73.5°73°


Warranty Information for Specialized Bikes and Wheels

Policy TermCoverage for Registered ProductsCoverage if Not Registered

Lifetime warranty* to the original owner against structural defects in material or workmanship on ALL models of Specialized-branded frames and forks

• Includes seatstays and chainstays on full-suspension bikes
• Does not include suspension forks and suspension parts
• Does not include paint and graphics (these are covered below)		Lifetime2 Years
Lifetime warranty* on Roval wheelsLifetime2 Years

Other Specialized-branded products are covered by a two-year warranty

• Paint and graphics on frames and frame set
• Specialized branded components
• Co-branded suspension (BRAIN)
• Motors & Drive systems components on e-bikes
• Equipment
• Helmets
• Shoes		2 Years2 Years

Turbo batteries have a warranty for 2 years or 300 charge cycles— whichever comes first.

2 years2 years

*Register your bike, frameset, or Roval wheels within the first 90 days of purchase for a lifetime warranty to the original owner. For Full warranty policy please visit specialized.com

Sizing Information
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