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
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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