2021 Specialized Bicycles Roubaix Sport Base 56
Build
700C/29 in × 30 mm
Insights
Somewhat upright stack and reach vs trend of endurance road bikes
Design deviates from other sizes of Specialized Bicycles Roubaix Sport
Stack and Reach vs. Category Trend
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Geometry
| Stack | 600mm |
| Reach | 384mm |
| Stack to Reach Ratio | 1.56:1 |
| Seat Tube Length, Unknown | 500mm |
| Top Tube Length, Actual C-C | 565mm |
| Top Tube Slope | 12.9deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 185mm |
| Bottom Bracket Drop | 76mm |
| Bottom Bracket Height | 265mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 408mm |
| Front-Center | 596.9mm |
| Front-Center Horizontal | 592mm |
| Wheelbase | 1000mm |
| Fork Offset/Rake | 45.7mm |
| Trail | 56.4mm mid/neutral |
| Mechanical Trail | 54mm |
| Wheel Flop | 15.8mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 85.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 95mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 30mm |
| Tire Outer Diameter | 682mm |
| Bike Length with Tires | 1682mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:CHAT GPT