Specialized Aethos Pro Ultegra Di2

Name: Specialized Aethos Pro Ultegra Di2
Brand: Specialized

2021 RoadRace Manufacturer page

Specialized Aethos Pro Ultegra Di2, color Satin Blue Murano / Carbon/cobalt

Last known price: $7,800

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 11
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

49cm 155–163
52cm 161–169
54cm 166–175
56cm 172–181
58cm 178–186
61cm 183–191

Components

12 of 16 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Aethos FACT 10r Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc Not identified

Suspension

1 part

Fork

FACT Carbon, 12x100mm thru-axle, flat-mount disc Not identified

Drivetrain

6 parts

Bottom bracket

BSA, 68mm, threaded Not identified
Cassette
- Shimano Ultegra CS-R8000 11 speeds 11–30t
CS-R8000
Chain
- Shimano Ultegra CN-6800
CN-6800
Crankset
- Shimano Ultegra FC-R8000
FC-R8000
Front derailleur
- Shimano Ultegra FD-R8050 2 speeds
FD-R8050
Rear derailleur
- Shimano Ultegra RD-R8050-GS
RD-R8050-GS

Brakes

1 part

Brakes
- Shimano Ultegra BR-R8070
BR-R8070

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Handlebar
- S-Works
Pedals
- Specialized
Saddle

Body Geometry Power Pro, Hollow Titanium Rails, Carbon Fiber Base Not identified
Seatpost
- Roval
Stem
- Specialized

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 54cm

Table

Reach 384mm

Stack 544mm

Wheelbase 978mm

Head angle 73.0°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	375	380	384	395	402	408
Stackmm	514	527	544	565	591	612
Top tube lengthmm	508	531	540	562	577	595
Seat tube lengthmm	431	462	481	504	532	567
Head tube lengthmm	109	120	137	157	184	204
Head tube angle	71.75°	72.5°	73°	73.5°	73.5°	74°
Seat tube angle	75.5°	74°	74°	73.5°	73.5°	73°
Chainstay lengthmm	410	410	410	410	410	410
Wheelbasemm	973	975	978	991	1005	1012
Front centermm	574	577	579	591	606	613
Bottom bracket dropmm	74	74	72	72	72	72
Bottom bracket heightmm	266	266	268	268	268	268
Standover heightmm	705	728	748	769	796	824
Fork rakemm	47	47	44	44	44	44
Trailmm	63	58	58	55	55	52
Stack/reach ratio	1.37	1.39	1.42	1.43	1.47	1.50
Suspension and parts
Crank lengthmm	165	170	172.5	172.5	175	175
Handlebar widthmm	380	400	420	420	440	440
Stem lengthmm	80	90	100	100	110	110
Seatpost lengthmm	300	300	360	360	360	360

Not published by the manufacturer: Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Rear sprockets: 11

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: BSA
Tire width: 26c
Wheel material: Carbon
Wheel size: 700c

Technical analysis

1 measure

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Shifting

Electronic

286 of 638 bicycles with this information use electronic shifting.

Cohort: Road / Race Model year: 2021
Sample: 638 bicycles with this information
Coverage: 100.0% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2021 builds

Differences across 2021 builds
Specification	This bicycle Specialized Aethos Pro Ultegra Di2	Specialized Aethos Expert	Specialized Aethos Pro SRAM Force eTap AXS	Specialized S-Works Aethos Dura-Ace Di2	Specialized S-Works Aethos - Founder's Edition	Specialized S-Works Aethos SRAM Red eTap AXS
Drivetrain
Rear sprockets	11	11	12	11	11	12
Smallest sprocket	Not informed	11	10	11	11	10
Largest sprocket	Not informed	30	33	30	30	33
Smallest chainring	Not informed	Not informed	Not informed	36	36	35
Largest chainring	Not informed	Not informed	Not informed	52	52	48
Lowest gear	Not informed	Not informed	Not informed	34.8 in	34.8 in	30.8 in
Highest gear	Not informed	Not informed	Not informed	137.1 in	137.1 in	139.2 in
Other specifications
Wheel material	Carbon	Aluminum	Carbon	Carbon	Carbon	Carbon
Power meter	Not informed	Not informed	Not informed	Shimano Dura-Ace R9100, HollowTech 2, 11-speed, Dual-sided Powermeter, 52/36TAdditional specification: Model display: Dura-AceAdditional specification: Model id: dura-ace	Shimano Dura-Ace R9100, HollowTech 2, 11-speed, Dual-sided Powermeter, 52/36TAdditional specification: Model display: Dura-AceAdditional specification: Model id: dura-ace	SRAM RED AXS Power Meter, 48/35TAdditional specification: Model display: Red AXSAdditional specification: Model id: red-axs