2021 Specialized Bicycles Aethos Base 56

Build

700C/29 in × 26 mm

Insights

Average stack and reach vs trend of performance road bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
565mm
Reach
395mm
Stack to Reach Ratio
1.43:1
Seat Tube Length, C-T
504mm
Top Tube Length, Effective/Horizontal Center
562mm
Top Tube Slope
8.6deg
Head Tube Angle
73.5deg
Seat Tube Angle
73.5deg
Head Tube Length
157mm
Bottom Bracket Drop
72mm
Bottom Bracket Height
265mm
Chainstay Length
410mm
Chainstay Length Horizontal
403.6mm
Front-Center
591mm
Front-Center Horizontal
587.4mm
Wheelbase
991mm
Fork Offset/Rake
44mm
Fork Length (Axle-To-Crown)
369mm
Trail
53.9mm
mid/​neutral
Mechanical Trail
51.7mm
Wheel Flop
14.7mm
Standover Height
769mm
Tire to Pedal Spindle Distance
With 172.5 mm cranks
81.5mm
Pedal Spindle to Ground Clearance
With 172.5 mm cranks
92.5mm

Base Build

Wheel Size
700C, 29 inch (622mm BSD)
Tire Width
26mm
Tire Outer Diameter
674mm
Bike Length with Tires
1665mm
Crank Length
172.5mm
Handlebar Width
420mm
Stem Length
100mm
Suspension Type
Rigid, non-suspension corrected
Bar Type
Drop Bar
Frame Material
Carbon/Composite
Fork Material
Carbon/Composite
Brake Type
Disc
Source:https://www.specialized.com/us/en/s-works-aethos---dura-ace-di2/p/187062?color=299404-187062&searchText=97221-0149