2018 Specialized Bicycles Roubaix Expert 56
Build
700C/29 in × 28 mm
Insights
Very upright stack and reach vs trend of performance road bikes
Design deviates from other sizes of Specialized Bicycles Roubaix
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 611mm |
| Reach | 381mm |
| Stack to Reach Ratio | 1.6:1 |
| Seat Tube Length, C-T | 501mm |
| Top Tube Length, Effective/Horizontal Center | 561.8mm |
| Top Tube Slope | 14deg |
| Head Tube Angle | 73.5deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 150mm |
| Bottom Bracket Drop | 76mm |
| Bottom Bracket Height | 263mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 408mm |
| Front-Center | 590mm |
| Front-Center Horizontal | 585mm |
| Wheelbase | 993mm |
| Fork Offset/Rake | 44mm |
| Trail | 54.5mm mid/neutral |
| Mechanical Trail | 52.3mm |
| Wheel Flop | 14.9mm |
| Standover Height | 785mm |
| Tire to Pedal Spindle Distance With 172.5 mm cranks | 78.5mm |
| Pedal Spindle to Ground Clearance With 172.5 mm cranks | 90.5mm |
Expert Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1671mm |
| Crank Length | 172.5mm |
| Handlebar Width | 420mm |
| Stem Length | 100mm |
| Suspension Type | Rigid, suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/roubaix-expert/p/133928?color=240098-133928&searchText=94418-3152