Bike-on-Bike
Insights
Somewhat aggressive stack and reach vs trend of endurance road bikes
Average stack and reach vs trend of endurance road bikes
Design deviates from other sizes of Specialized Bicycles Roubaix
Geometry
Stack | 566mm | 605mm +39mm |
Reach | 394mm | 389mm -5mm |
Stack to Reach Ratio | 1.44:1 | 1.56:1 |
Seat Tube Length, C-T | 545mm | — |
Seat Tube Length, Unknown | — | 545mm |
Top Tube Length, Effective/Horizontal Center | — | 569mm |
Top Tube Length, Effective/Horizontal Unknown | 562mm | — |
Top Tube Slope | 4.5deg | 8.6deg +4.1deg |
Head Tube Angle | 73deg | 73deg +0deg |
Seat Tube Angle | 73.5deg | 73.5deg +0deg |
Head Tube Length | 140mm | 140mm +0mm |
Bottom Bracket Drop | 72mm | 78mm +6mm |
Bottom Bracket Height | 267mm | 265mm -2mm |
Chainstay Length | 419mm | 420mm +1mm |
Chainstay Length Horizontal | 412.8mm | 412.7mm -0.1mm |
Front-Center | 596.6mm | 604mm +7.4mm |
Front-Center Horizontal | 596mm | 599.3mm +3.3mm |
Wheelbase | 1005mm | 1012mm +7mm |
Fork Offset/Rake | 45mm | 47mm +2mm |
Fork Length (Axle-To-Crown) | 381mm | — |
Fork Length, Unknown | — | 375mm |
Trail | 56.6mm mid/neutral | 55.7mm -0.9mm mid/neutral |
Mechanical Trail | 54.1mm | 53.3mm -0.8mm |
Wheel Flop | 15.8mm | 15.6mm -0.2mm |
Standover Height | 802mm | 787mm -15mm |
Tire to Pedal Spindle | 87.6mm 170 mm cranks | 88.5mm +0.9mm 172.5 mm cranks |
Pedal Spindle to Ground Clearance | 97mm 170 mm cranks | 92.5mm -4.5mm 172.5 mm cranks |
Build
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 32mm +4mm |
Tire Outer Diameter | 678mm | 686mm +8mm |
Bike Length with Tires | 1683mm | 1698mm +15mm |
Crank Length | — | 172.5mm |
Handlebar Width | — | 420mm |
Stem Length | — | 100mm |
Stem Angle | — | 6deg |
| Suspension Type | Rigid, non-suspension corrected | Rigid, non-suspension corrected |
| Bar Type | Drop Bar | Drop Bar |
| Frame Material | Steel | Carbon/Composite |
| Fork Material | Carbon/Composite | Carbon/Composite |
| Brake Type | Disc | Disc |
Meta
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| Source | https://fairlightcycles.com/wp-content/uploads/2025/01/Fairlight-Strael-4.0-Design-Notes-v1.pdf | https://www.specialized.com/us/en/s-works-roubaix-sl8/p/216941?color=349860-216941 |
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