2026 Specialized Bicycles Aethos 2 56
Build
700C/29 in × 28 mm
Insights
Average stack and reach vs trend of performance road bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 580mm |
| Reach | 391mm |
| Stack to Reach Ratio | 1.48:1 |
| Seat Tube Length, Unknown | 510mm |
| Top Tube Length, Effective/Horizontal Center | 557mm |
| Top Tube Slope | 9.6deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 169mm |
| Bottom Bracket Drop | 75mm |
| Bottom Bracket Height | 264mm |
| Chainstay Length | 410mm |
| Chainstay Length Horizontal | 403.1mm |
| Front-Center | 599mm |
| Front-Center Horizontal | 594.9mm |
| Wheelbase | 998mm |
| Fork Offset/Rake | 47mm |
| Fork Length, Unknown | 372mm |
| Trail | 54.5mm mid/neutral |
| Mechanical Trail | 52.1mm |
| Wheel Flop | 15.2mm |
| Standover Height | 779mm |
| Tire to Pedal Spindle Distance With 172.5 mm cranks | 87.5mm |
| Pedal Spindle to Ground Clearance With 172.5 mm cranks | 91.5mm |
2 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1676mm |
| Crank Length | 172.5mm |
| Handlebar Width | 400mm |
| 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-2-frameset-fact-12r-carbon/p/4221567?color=5446310-4221567