2023 Aethos Expert

• 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.

BIKE SPECS

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

Saddle: Body Geometry Power Expert

SeatPost: Roval Alpinist Carbon Seatpost

Seat Binder: Specialized Alloy, 30mm

Handlebars: Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach

Stem: Specialized Pro SL, alloy, 4-bolt

Tape: Supacaz Super Sticky Kush

Front Brake: SRAM Rival eTAP AXS, hydraulic disc

Rear Brake: SRAM Rival eTAP AXS, hydraulic disc

Chain: SRAM Rival 12-speed

Cassette: SRAM Rival, 12-speed, 10-36t

Bottom Bracket: SRAM DUB BSA 68

Shift Levers: SRAM Rival eTap AXS

Front Derailleur: SRAM Rival eTAP AXS, braze-on

Rear Derailleur: SRAM Rival eTap AXS, 12-speed

Crankset: SRAM Rival AXS Power Meter

Chainrings: 48/35T

Rear Wheel: Roval C38, 21mm internal width carbon rim

Front Wheel: Roval C38, 21mm internal width carbon rim

Inner Tubes: 700x20-28, 48mm Presta Valve

Rear Tire: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x28mm

Front Tire: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x28mm

Weight Size: 56

Weight: 7.64kg (16 lb, 13.5 oz)

GEOMETRY

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