2026 Specialized Bicycles Aethos 2

	49	52	54	56	58	61
Stack	522mm	538mm	559mm	580mm	606mm	627mm
Reach	373mm	377mm	384mm	391mm	398mm	404mm
Stack to Reach Ratio	1.4:1	1.43:1	1.46:1	1.48:1	1.52:1	1.55:1
Seat Tube Length, Unknown	450mm	470mm	490mm	510mm	535mm	570mm
Top Tube Length, Effective/Horizontal Center	508mm	526mm	544mm	557mm	572mm	584mm
Top Tube Slope	10.1deg	9.6deg	9.6deg	9.6deg	9.6deg	8deg
Head Tube Angle	71.4deg	72.1deg	72.5deg	73deg	73deg	73.5deg
Seat Tube Angle	75.5deg	74.5deg	74deg	74deg	74deg	74deg
Head Tube Length	114mm	128mm	150mm	169mm	198mm	218mm
Bottom Bracket Drop	76.5mm	76.5mm	75mm	75mm	73.5mm	73.5mm
Bottom Bracket Height	262.5mm	262.5mm	264mm	264mm	265.5mm	265.5mm
Chainstay Length	410mm	410mm	410mm	410mm	410mm	410mm
Chainstay Length Horizontal	402.8mm	402.8mm	403.1mm	403.1mm	403.4mm	403.4mm
Front-Center	581mm	584mm	594mm	599mm	614mm	621mm
Front-Center Horizontal	575.2mm	578.2mm	588.9mm	594.9mm	609.6mm	616.6mm
Wheelbase	978mm	981mm	992mm	998mm	1013mm	1020mm
Fork Offset/Rake	50mm	50mm	50mm	47mm	47mm	47mm
Fork Length, Unknown	372mm	372mm	372mm	372mm	372mm	372mm
Trail	61.3mm mid/neutral	57mm mid/neutral	54.5mm mid/neutral	54.5mm mid/neutral	54.5mm mid/neutral	51.4mm mid/neutral
Mechanical Trail	58.1mm	54.2mm	51.9mm	52.1mm	52.1mm	49.3mm
Wheel Flop	18.5mm	16.7mm	15.6mm	15.2mm	15.2mm	14mm
Standover Height	719mm	737mm	759mm	779mm	805mm	834mm
Tire to Pedal Spindle	77mm 165 mm cranks	75mm 170 mm cranks	82.5mm 172.5 mm cranks	87.5mm 172.5 mm cranks	100mm 175 mm cranks	107mm 175 mm cranks
Pedal Spindle to Ground Clearance	97.5mm 165 mm cranks	92.5mm 170 mm cranks	91.5mm 172.5 mm cranks	91.5mm 172.5 mm cranks	90.5mm 175 mm cranks	90.5mm 175 mm cranks

	49	52	54	56	58	61
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	28mm	28mm	28mm	28mm	28mm
Tire Outer Diameter	678mm	678mm	678mm	678mm	678mm	678mm
Bike Length with Tires	1656mm	1659mm	1670mm	1676mm	1691mm	1698mm
Crank Length	165mm	170mm	172.5mm	172.5mm	175mm	175mm
Handlebar Width	380mm	380mm	400mm	400mm	420mm	420mm
Stem Length	80mm	90mm	100mm	100mm	110mm	110mm

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Category Trend

Source:https://www.specialized.com/us/en/s-works-aethos-2-frameset-fact-12r-carbon/p/4221567?color=5446310-4221567

Geometry