Specialized Aethos 2 (2026)

road · sizes 49–61 · tyres up to 35 mm Manufacturer’s website

Good to know: Integrated cockpit

Integrated cockpit (a one-piece bar and stem) on at least one build. Changing the length means replacing the whole cockpit, and not every length exists. Check which length the bike actually ships with before you buy.

Geometry ?

Specialized Aethos 2 2026 geometry in sizes 49–61: stack 522–627 mm, reach 373–404 mm, head angle 71.4–73.5°.

	49	52	54	56	58	61
Stack	522 mm	538 mm	559 mm	580 mm	606 mm	627 mm
Reach	373 mm	377 mm	384 mm	391 mm	398 mm	404 mm
Head angle	71.4°	72.1°	72.5°	73°	73°	73.5°
Seat angle	75.5°	74.5°	74°	74°	74°	74°
Seat tube (c-t)	450 mm	470 mm	490 mm	510 mm	535 mm	570 mm
Head tube	114 mm	128 mm	150 mm	169 mm	198 mm	218 mm
Top tube (effective)	508 mm	526 mm	544 mm	557 mm	572 mm	584 mm
BB drop	76.5 mm	76.5 mm	75 mm	75 mm	73.5 mm	73.5 mm
Chainstay	410 mm	410 mm	410 mm	410 mm	410 mm	410 mm
Wheelbase	978 mm	981 mm	992 mm	998 mm	1013 mm	1020 mm
Standover	719 mm	737 mm	759 mm	779 mm	805 mm	834 mm
Fork length	372 mm	372 mm	372 mm	372 mm	372 mm	372 mm
Fork offset	50 mm	50 mm	50 mm	47 mm	47 mm	47 mm
Stock build by size
Cranks	165 mm	165 mm	170 mm	170 mm	172.5 mm	172.5 mm
Stem	80 mm	90 mm	100 mm	100 mm	110 mm	110 mm
Stem angle	−6°	−6°	−6°	−6°	−6°	−6°
Bar width S-Works Aethos 2 (SRAM RED AXS)	380 mm	380 mm	400 mm	400 mm	420 mm	420 mm
Bar width Aethos 2 Expert (Shimano Ultegra Di2)	380 mm	400 mm	400 mm	420 mm	420 mm	440 mm

Source: specialized.com, checked 1 Nov 2026 · bar position: worked out from published data

Manufacturer’s manual (PDF)

Stock build

S-Works Aethos 2 (SRAM RED AXS)

Groupset: SRAM RED AXS E1, hydraulic disc
Cranks: SRAM RED AXS E1 with Quarq Power Meter, 48/35
Handlebar: Roval Alpinist Cockpit II, Integrated Bar/Stem
Seatpost: Roval Alpinist Carbon Seatpost, light weight clamp
Saddle: S-Works Power with Mirror

Aethos 2 Pro (SRAM Force AXS)

Groupset: SRAM Force AXS E1
Cranks: SRAM Force with Quarq Power Meter, 48/35t
Handlebar: Roval Alpinist Cockpit II, Integrated Bar/Stem
Seatpost: Roval Alpinist Carbon Seatpost
Saddle: Power Pro Mirror, hollow Ti rails

Aethos 2 Expert (Shimano Ultegra Di2)

Groupset: Shimano Ultegra Di2 R8170, hydraulic disc
Cranks: Shimano Ultegra R8100, 52/36t
Stem: Roval Alpinist, alloy, −6°
Handlebar: Roval Alpinist Carbon Handlebar, 125 mm drop, 75 mm reach
Seatpost: Roval Alpinist Carbon Seatpost
Saddle: Body Geometry Power Expert, hollow Ti rails

Source for all builds: specialized.com, checked 1 Nov 2026

Frames with similar geometry

Stack and reach within 12 mm of size 56 (stack 580 / reach 391 mm).

Fuji SL-A 1.3 (2026)size L · stack 580 / reach 390 mm Litespeed Spezia (2026)size M/L · stack 580 / reach 390 mm Litespeed Spezia FI (2026)size M/L · stack 580 / reach 390 mm Lynskey Aeon (2026)size ML · stack 580 / reach 392 mm Lynskey Meraki (2026)size ML · stack 580 / reach 392 mm Lynskey SR 350 (2027)size ML · stack 580 / reach 392 mm

Spotted a mistake or a missing build? Let me know.