2025 SL8 Specialized Tarmac sl8 Pro 172.5mm
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 | 544mm |
| Reach | 384mm |
| Stack to Reach Ratio | 1.42:1 |
| Seat Tube Length, Unknown | 473mm |
| Top Tube Length, Effective/Horizontal Center | 541mm |
| Top Tube Slope | 9.9deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 137mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 265mm |
| Chainstay Length | 410mm |
| Chainstay Length Horizontal | 403.6mm |
| Front-Center | 579mm |
| Front-Center Horizontal | 574.4mm |
| Wheelbase | 978mm |
| Fork Offset/Rake | 44.1mm |
| Fork Length, Unknown | 370mm |
| Trail | 57mm mid/neutral |
| Mechanical Trail | 54.5mm |
| Wheel Flop | 15.9mm |
| Standover Height | 768mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 72mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 95mm |
Pro Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 26mm |
| Tire Outer Diameter | 674mm |
| Bike Length with Tires | 1652mm |
| 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/tarmac-sl8-pro-ultegra-di2/p/4274935?color=5430657-4274935