Bicycle Archive · Specification report

2027 Specialized Aethos 2 Expert - Shimano Ultegra Di2

Velopedia Archive ID 900001088

Overview

Model year	2027
Brand	Specialized
Model	Aethos 2 Expert - Shimano Ultegra Di2
Bicycle type	Road
Archive ID	900001088
Original MSRP	$6,499.99
Colors	Dolomite Metallic / Shadow Silver
Sizes	49; 52; 54; 56; 58; 61
Weight	7.27 kg (16 lb, 0.4 oz)

Frameset

Frame construction	Aethos 2 FACT 10r Carbon, Rider First Engineered™, Threaded BB, Hidden Cable Routing, 12x142mm thru-axle, flat-mount disc
Frame material	Carbon Fiber
Fork	Aethos 2 FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Fork material	Carbon Fiber

Drivetrain

Shifters	Shimano Ultegra Di2 R8170, hydraulic disc
Front derailleur	Shimano Ultegra Di2 R8150, braze-on
Rear derailleur	Shimano Ultegra Di2 R8150, 12-speed
Crankset	Shimano Ultegra R8100, 52/36t
Bottom bracket	Shimano Threaded BSA BB
Cassette	Shimano Ultegra, 12-speed, 11-30t
Chain	Shimano XT CN-M8100, 12-speed

Brakes

Brakes	(F) Shimano Ultegra BR-R8170 Hydraulic Brake / (R) Shimano Ultegra BR-R8170 Hydraulic Brake

Cockpit & contact points

Handlebar	Roval Alpinist Carbon Handlebar, 125mm drop, 75mm reach
Stem	Roval Alpinist, alloy, 4 bolt, -6 degrees
Saddle	Body Geometry Power Expert, hollow Ti rails
Seatpost	Roval Alpinist Carbon Seatpost

Wheels & tires

Wheels	(F) Roval C38, 21mm internal width carbon rim / (R) Roval C38, 21mm internal width carbon rim, tubeless ready
Front tire	S-Works Turbo, 700x30
Rear tire	S-Works Turbo, 700x30

Geometry · 49

Seat tube	450 mm
Effective top tube	508 mm
Head tube	114 mm
Head-tube angle	71.4°
Seat-tube angle	75.5°
Chainstay / rear center	410 mm
Wheelbase	978 mm
Bottom-bracket drop	76.5 mm
Bottom-bracket height	265.5 mm
Reach	373 mm
Stack	522 mm
Standover height	719 mm
Fork offset / rake	50 mm
Front center	581 mm
Trail	62 mm
Fork length / axle-to-crown	372 mm
Crank length	165 mm
Stem length	80 mm
Handlebar width	380 mm

Geometry · 52

Seat tube	470 mm
Effective top tube	526 mm
Head tube	128 mm
Head-tube angle	72.1°
Seat-tube angle	74.5°
Chainstay / rear center	410 mm
Wheelbase	981 mm
Bottom-bracket drop	76.5 mm
Bottom-bracket height	265.5 mm
Reach	377 mm
Stack	538 mm
Standover height	737 mm
Fork offset / rake	50 mm
Front center	584 mm
Trail	58 mm
Fork length / axle-to-crown	372 mm
Crank length	165 mm
Stem length	90 mm
Handlebar width	400 mm

Geometry · 54

Seat tube	490 mm
Effective top tube	544 mm
Head tube	150 mm
Head-tube angle	72.5°
Seat-tube angle	74°
Chainstay / rear center	410 mm
Wheelbase	992 mm
Bottom-bracket drop	75 mm
Bottom-bracket height	267 mm
Reach	384 mm
Stack	559 mm
Standover height	759 mm
Fork offset / rake	50 mm
Front center	594 mm
Trail	55 mm
Fork length / axle-to-crown	372 mm
Crank length	170 mm
Stem length	100 mm
Handlebar width	400 mm

Geometry · 56

Seat tube	510 mm
Effective top tube	557 mm
Head tube	169 mm
Head-tube angle	73°
Seat-tube angle	74°
Chainstay / rear center	410 mm
Wheelbase	998 mm
Bottom-bracket drop	75 mm
Bottom-bracket height	267 mm
Reach	391 mm
Stack	580 mm
Standover height	779 mm
Fork offset / rake	47 mm
Front center	599 mm
Trail	55 mm
Fork length / axle-to-crown	372 mm
Crank length	170 mm
Stem length	100 mm
Handlebar width	420 mm

Geometry · 58

Seat tube	535 mm
Effective top tube	572 mm
Head tube	198 mm
Head-tube angle	73°
Seat-tube angle	74°
Chainstay / rear center	410 mm
Wheelbase	1013 mm
Bottom-bracket drop	73.5 mm
Bottom-bracket height	268.5 mm
Reach	398 mm
Stack	606 mm
Standover height	805 mm
Fork offset / rake	47 mm
Front center	614 mm
Trail	55 mm
Fork length / axle-to-crown	372 mm
Crank length	172.5 mm
Stem length	110 mm
Handlebar width	420 mm

Geometry · 61

Seat tube	570 mm
Effective top tube	584 mm
Head tube	218 mm
Head-tube angle	73.5°
Seat-tube angle	74°
Chainstay / rear center	410 mm
Wheelbase	1020 mm
Bottom-bracket drop	73.5 mm
Bottom-bracket height	268.5 mm
Reach	404 mm
Stack	627 mm
Standover height	834 mm
Fork offset / rake	47 mm
Front center	621 mm
Trail	52 mm
Fork length / axle-to-crown	372 mm
Crank length	172.5 mm
Stem length	110 mm
Handlebar width	440 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 21, 2026.