Aethos Comp - Shimano 105 Di2 (2024)

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Product details

Management number	202921689	Release Date	2025/09/27	List Price	$1,999.98	Model Number	202921689
Category	BIKES BIKES

What if Specialized used every ounce of experience they’ve gained serving riders over the past 46 years and built a bike made simply for the love of riding? The Aethos is designed to straddle the line between perfect ride quality, extreme lightweight, and undeniable style. The Aethos Comp model is no exception.

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.

FEATURES

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, further saving weight and improving ride characteristics. Everything in pursuit for the perfect ride.

Frame	Aethos FACT 9R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc
Fork	FACT Carbon, 12x100mm thru-axle, flat-mount disc
Saddle	Body Geometry Power Sport, steel rails
SeatPost	Roval Alpinist Carbon Seatpost
Seat Binder	Shimano 105 R7170, hydraulic disc
Stem	Specialized Pro SL, alloy, 4-bolt
Handlebars	Specialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp
Tape	Roubaix S-Wrap
Front Brake	Shimano 105, Hydraulic disc
Rear Brake	Shimano 105 R7170, hydraulic disc
Chainrings	50/34T
Shift Levers	Shimano 105 Di2 7170
Cassette	Shimano 105, 12-speed, 11-34t
Crankset	FC-R7100, 105, 12-Speed, Holllowtech 2
Rear Derailleur	Shimano 105 Di2 7150
Front Derailleur	Shimano 105 Di2 7150, braze on
Chain	Shimano SLX M7100, 12-speed w/ quick link
Bottom Bracket	Shimano Threaded BSA BB
Front Wheel	DT R470 Disc
Rear Wheel	DT R470 Disc
Inner Tubes	Presta Valve Standard, 48mm valves
Front Tire	Turbo Pro, 700x28
Rear Tire	Turbo Pro, 700x28
Weight Size	56
Weight	7.5 kg (16 lb, 8.6 oz)

	49	49	52	52	54	54	56	56	58	58	61	61
Crank Length	165	165	170	170	172.5	172.5	172.5	172.5	175	175	175	175
Handlebar Width	380	380	400	400	420	420	420	420	440	440	440	440
Stem Length	80	80	90	90	100	100	100	100	110	110	110	110
Saddle Width	155	155	155	155	143	143	143	143	143	143	143	143
Seatpost Length	300	300	300	300	360	360	360	360	360	360	360	360
Reach	375	380	384	395	402	408
Head Tube Angle	71.75	72.5	73	73.5	73.5	74
Chainstay Length	410	410	410	410	410	410
Top Tube Length, Horizontal	508	531	540	562	577	595
Seat Tube Angle	75.5	74	74	73.5	73.5	73
Stack	514	527	544	565	591	612
Seat Tube Length	431	462	481	504	532	567
BB Drop	74	74	72	72	72	72
Bike Standover Height	705	728	748	769	796	824
Trail	63	58	58	55	55	52
Fork Length, Full	369	369	369	369	369	369
Head Tube Length	109	157	184	204	137	120
BB Height	266	268	268	268	268	266
Fork Rake/Offset	47	47	44	44	44	44
Front Center	574	577	579	591	606	613
Wheelbase	973	975	978	991	1005	1012