2021 Specialized Bicycles Aethos Base 49
Build
700C/29 in × 26 mm
Insights
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of Specialized Bicycles Aethos
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 514mm |
| Reach | 375mm |
| Stack to Reach Ratio | 1.37:1 |
| Seat Tube Length, C-T | 431mm |
| Top Tube Length, Effective/Horizontal Center | 508mm |
| Top Tube Slope | 11.3deg |
| Head Tube Angle | 71.75deg |
| Seat Tube Angle | 75.5deg |
| Head Tube Length | 109mm |
| Bottom Bracket Drop | 74mm |
| Bottom Bracket Height | 263mm |
| Chainstay Length | 410mm |
| Chainstay Length Horizontal | 403.3mm |
| Front-Center | 574mm |
| Front-Center Horizontal | 569.7mm |
| Wheelbase | 973mm |
| Fork Offset/Rake | 47mm |
| Fork Length (Axle-To-Crown) | 369mm |
| Trail | 61.6mm mid/neutral |
| Mechanical Trail | 58.5mm |
| Wheel Flop | 18.3mm |
| Standover Height | 705mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 72mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 98mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 26mm |
| Tire Outer Diameter | 674mm |
| Bike Length with Tires | 1647mm |
| Crank Length | 165mm |
| Handlebar Width | 380mm |
| Stem Length | 80mm |
| 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