2021 Specialized Bicycles Roubaix Base
- Category
- Endurance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category |
Geometry
44 | 49 | 52 | 54 | 56 | 58 | 61 | |
Stack | 540mm | 555mm | 570mm | 585mm | 605mm | 630mm | 665mm |
Reach | 353mm | 363mm | 368mm | 376mm | 384mm | 392mm | 398mm |
Stack to Reach Ratio | 1.53:1 | 1.53:1 | 1.55:1 | 1.56:1 | 1.58:1 | 1.61:1 | 1.67:1 |
Seat Tube Length, Unknown | 365mm | 410mm | 446mm | 465mm | 485mm | 505mm | 547mm |
Top Tube Length, Effective/Horizontal Center | 512mm | 525mm | 533mm | 545mm | 563mm | 579mm | 595mm |
Top Tube Slope | 22.6deg | 18.7deg | 16.1deg | 15.3deg | 15deg | 15.2deg | 14.3deg |
Head Tube Angle | 70deg | 71.5deg | 72deg | 72.75deg | 73.5deg | 73.5deg | 74deg |
Seat Tube Angle | 74deg | 74deg | 74deg | 74deg | 73.5deg | 73.5deg | 73.5deg |
Head Tube Length | 90mm | 100mm | 112mm | 125mm | 143mm | 170mm | 205mm |
Bottom Bracket Drop | 77.5mm | 77.5mm | 77.5mm | 76mm | 76mm | 74.5mm | 74.5mm |
Bottom Bracket Height | 261.5mm | 261.5mm | 261.5mm | 263mm | 263mm | 264.5mm | 264.5mm |
Chainstay Length | 413mm | 413mm | 413mm | 415mm | 415mm | 418mm | 418mm |
Chainstay Length Horizontal | 405.7mm | 405.7mm | 405.7mm | 408mm | 408mm | 411.3mm | 411.3mm |
Front-Center | 580mm | 581mm | 586mm | 585mm | 592mm | 607mm | 618mm |
Front-Center Horizontal | 575.3mm | 576.3mm | 580.3mm | 580mm | 587mm | 602.7mm | 612.7mm |
Wheelbase | 981mm | 982mm | 986mm | 988mm | 995mm | 1014mm | 1024mm |
Fork Offset/Rake | 50mm | 50mm | 50mm | 44mm | 44mm | 44mm | 44mm |
Fork Length (Axle-To-Crown) | 370mm | 370mm | 370mm | 370mm | 370mm | 370mm | 370mm |
Trail | 70.2mm high | 60.7mm mid/​neutral | 57.6mm mid/​neutral | 59.2mm mid/​neutral | 54.5mm mid/​neutral | 54.5mm mid/​neutral | 51.4mm mid/​neutral |
Mechanical Trail | 65.9mm | 57.6mm | 54.8mm | 56.5mm | 52.3mm | 52.3mm | 49.4mm |
Wheel Flop | 22.6mm | 18.3mm | 16.9mm | 16.8mm | 14.9mm | 14.9mm | 13.6mm |
Standover Height | 682mm | 715mm | 743mm | 762mm | 783mm | 805mm | 844mm |
Tire to Pedal Spindle | 76mm 165 mm cranks | 77mm 165 mm cranks | 77mm 170 mm cranks | 73.5mm 172.5 mm cranks | 80.5mm 172.5 mm cranks | 93mm 175 mm cranks | 104mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 96.5mm 165 mm cranks | 96.5mm 165 mm cranks | 91.5mm 170 mm cranks | 90.5mm 172.5 mm cranks | 90.5mm 172.5 mm cranks | 89.5mm 175 mm cranks | 89.5mm 175 mm cranks |
Base Build
44 | 49 | 52 | 54 | 56 | 58 | 61 | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm |
Tire Outer Diameter | 678mm | 678mm | 678mm | 678mm | 678mm | 678mm | 678mm |
Bike Length with Tires | 1659mm | 1660mm | 1664mm | 1666mm | 1673mm | 1692mm | 1702mm |
Crank Length | 165mm | 165mm | 170mm | 172.5mm | 172.5mm | 175mm | 175mm |
Handlebar Width | 360mm | 380mm | 400mm | 420mm | 420mm | 440mm | 440mm |
Stem Length | 70mm | 80mm | 90mm | 100mm | 100mm | 110mm | 110mm |
Published Sizing Recommendations
Height | 142 cm to 152 cm | 155 cm to 163 cm | 163 cm to 170 cm | 170 cm to 178 cm | 175 cm to 180 cm | 180 cm to 188 cm | 188 cm to 196 cm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Endurance RoadSource:https://www.specialized.com/us/en/roubaix/p/184477?color=293287-184477&searchText=94421-7144&size=54