2023 Specialized Bicycles Aethos Dura Ace Di2 58
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 | 591mm |
| Reach | 402mm |
| Stack to Reach Ratio | 1.47:1 |
| Seat Tube Length, Unknown | 532mm |
| Top Tube Length, Effective/Horizontal Center | 577mm |
| Top Tube Slope | 8.3deg |
| Head Tube Angle | 73.5deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 184mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 267mm |
| Chainstay Length | 410mm |
| Chainstay Length Horizontal | 403.6mm |
| Front-Center | 606mm |
| Front-Center Horizontal | 601.4mm |
| Wheelbase | 1005mm |
| Fork Offset/Rake | 44mm |
| Fork Length, Unknown | 369mm |
| Trail | 54.5mm mid/neutral |
| Mechanical Trail | 52.3mm |
| Wheel Flop | 14.9mm |
| Standover Height | 796mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 92mm |
| Pedal Spindle to Ground Clearance With 175 mm cranks | 92mm |
Dura Ace Di2 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1683mm |
| Crank Length | 175mm |
| Handlebar Width | 440mm |
| Stem Length | 110mm |
| Stem Angle | 6deg |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 11 in to 6 ft 2 in |
Source:https://www.specialized.com/us/en/s-works-tarmac-sl8-ltd-red-bull-2025-tdf/p/4293988?color=5467505-4293988&utm_source=google&utm_medium=cpc&utm_campaign=US_Branded_Search_+RoadBikes_ROI&utm_id=21306411105&utm_content=164309405724&utm_term=specialized+tarmac&gad_source=1&gad_campaignid=21306411105&gbraid=0AAAAADtPVfIyC1Rx8shnATbwVVJW8i50g&gclid=EAIaIQobChMIqrXdqryrjgMVlxCtBh05Oje0EAAYASABEgIT3fD_BwE