The 2023 Specialized Aethos Comp Shimano 105 Di2 Road Bike is designed to straddle the line between perfect ride quality, extreme lightweight, and undeniable style. The Aethos Comp model is no exception.
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 have 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 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. Just a few pedal strokes and you’ll realize this sublime ride sets a new standard.
With low-maintenance, Shimano 105 Di2 electronic shifting and hydraulic disc brakes paired with bomb-proof DT Swiss R470 Disc wheels, you have the perfect steed to excite you out on the road.
As a lightweight bike the Aethos makes a great climbing bike but is comfortable for all day riding
Guide To Road Bike Gears
If you are buying a road bike one of the big differences between models will be which gears they use. Most manufacturers will make the same bike, using the same frame but putting different gears and wheels on it. So for instance you can buy a Trek Domane AL 2 Disc with Shimano Claris gearing for £975 or get the Trek Domane AL 4 Disc with Tiagra gearing for £1625. They are fundamentally the same bike. One comes with the Shimano Tiagra gears and the other comes with Shimano Claris gears.
In most cases, the bottom of the range gears and top of the range gears will basically work in the same way. The big differences are in the quality of material used and the weight. Top of the range gears will be lighter and smoother to use.
One thing to watch out for when comparing bikes is whether the full groupset is being used. If you are buying a bike that has Shimano 105 gears on it. Shimano makes 105 brakes, gear levers, front and rear derailleurs, cranks, chainrings and bottom brackets. So basically all of the running gear on the bike. Some bike manufacturers will fit the full groupset, others will fit Shimano 105 front and rear derailleurs but use their own brakes and cranks to save a few pounds. So if you are comparing bikes be sure to check how much of the groupset the bike actually uses.
Nothing beats the feeling of effortless speed you get on a road bike. There are lots of reasons to ride a road bike, from the simple joy of it, to racing, long distance challenges, or café rides with friends. Whatever you want to do there will be road bike out there for you.
Nearly all manufacturers have stopped making dedicated men’s and women’s bikes. They are now all unisex. What you will see is that on smaller bikes, brands will often fit a wider saddle (generally more female friendly). On larger bikes they will often fit a narrower one (generally more male friendly).
It is getting increasingly hard to buy new bikes with rim brakes as the industry has almost exclusively switched to discs. The reasons for this are pretty simple. Disc brakes are much, much, more powerful than old rim brake systems so you can stop a lot more easily and safely. Disc brakes also allow much bigger tyres to be fitted which is more comfortable. Older disc brake systems did often suffer from rubbing and squeaking. While this hasn’t been completely fixed yet it is much less common on modern bikes with hydraulic brakes. Mechanical disc brakes can still take a bit of fettling to get them right so go for hydraulic if you can.
Specialized is one of the best-known quality bike brands in the world. Started by a group of riders in 1974. A fact which has guided their decision making ever since.
" Made for riders, by riders."
They strove to make the best quality tires when quality tyres weren't around. When people wanted to ride cruisers in the dirt, they made the first production mountain bike. When roadies wanted to go faster, Specialized doubled down on carbon and built their own wind tunnel.
Bikes like the Allez, Rockhopper and Stumpjumper have developed followings and reputations of their own. Specialized has a reputation for making high-end, high-quality bikes. Specialized bikes always look great with high-quality paint and sensible sizing hel0s you get the right bike each time. If you buy a Specialized bike you can be guaranteed it will do what it is supposed to and will last.
We understand that price is important, so we regularly price-check our competitors to make sure we have the best offers available. We recognise that we will not always be the cheapest, so if you see the same product cheaper from any of our competitors then please get in touch via the form below and we will do our best to match any reasonable advertised price.
|Frame||IC091-1, 2021 Project 300 10r Disc|
|Fork||FC070~72-2, 2021 Project 300 10r Disc|
|Handlebars||Specialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp|
|Stem||Specialized Pro SL, alloy, 4-bolt|
|Tape||Supacaz Super Sticky Kush|
|Saddle||Body Geometry Power Sport, steel rails|
|SeatPost||Roval Alpinist Carbon Seatpost|
|Front Brake||Shimano 105, Hydraulic disc|
|Rear Brake||Shimano 105, Hydraulic disc|
|Seat Binder||SEAT COLLAR, KCNC, SPL-SC02-300-02, EXTRUDED, 7075-T73, 30.0MM, 10B21, BLACK ZINC BOLT, BOLT CLAMP TYPE|
|Shift Levers||DISC BRAKE ASSEMBLED SET/J-kit DIRECT, 105, ST-R7170(R), BR-R7170(R), W/O ADAPTER,FOR 25MM MNT, RESIN PAD(W/O FIN), XXXXMM HOSE(SM-BH90 BLACK), 1 GROUP, BULK|
|Front Derailleur||Shimano 105 R7170, braze-on|
|Rear Derailleur||Shimano 105 R7170, 12-speed|
|Chain||Shimano SLX, M7100, 12-speed|
|Cassette||Shimano 105, 12-speed, 11-34t|
|Crankset||SHIMANO FRONT CHAINWHEEL, FC-R7100, 105, FOR REAR 12-SPEED, HOLLOWTECH 2, 50-34T W/O CG, W/O BB PARTS, BLACK|
|Bottom Bracket||Shimano Threaded BSA BB|
|Front Wheel||DT Swiss R470 rim, 20mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples.|
|Rear Wheel||DT Swiss R470 rim, 20mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples.|
|Front Tire||Turbo Pro, 60 TPI, folding bead, BlackBelt protection, 700x28mm|
|Rear Tire||Turbo Pro, 60 TPI, folding bead, BlackBelt protection, 700x28mm|
|Inner Tubes||PV STANDARD BULK ROAD 700x20-28, 48mm|
|Colours||Gloss Red Ghost Pearl over Dune White/Dune White, Satin Carbon/Abalone over Carbon|
|Sizes||49, 52, 54, 56, 58, 61|
|Barcodes||196625116162, 196625116223, 196625116230, 196625116278, 196625116285, 196625116346, 196625116391, 196625116421, 196625116469, 196625116476, 196625116537, 196625116643|
|SKUs / Part Numbers||97223-5349, 97223-5352, 97223-5354, 97223-5356, 97223-5358, 97223-5361, 97223-5449, 97223-5452, 97223-5454, 97223-5456, 97223-5458, 97223-5461|
Please note: Manufacturers can sometimes change the specification of the products from time to time.
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