Rear tire: 700C×28.
Velopedia Bicycle Archive
2021 Specialized Roubaix
Original specifications: geometry for 7 published sizes.
Selling this bike? Get the spec link and selling options
At a glance
- Model year
- 2021
- Category
- Road
- Original MSRP
- $2,600.00
- Sizes
- 44, 49, 52, 54, 56, 58, 61
- Colors
- Gloss Raspberry/Tarmac Black, Gloss Tarmac Black/Abalone, Gloss Sky Blue/Tarmac Black
- Geometry
- 7 manufacturer sizes
- In this record
- 18 specifications · 8 archived images · original MSRP · geometry
- Archive ID
- 900003914
Model history 4 other years
Original buildCarbon Fiber
Frameset
| Frame Construction | FACT 10R, Rider First Engineered™ (RFE), FreeFoil Shape Library tubes, threaded BB, 12x142mm thru-axle, flat-mount disc |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | Future Shock 1.5 w/ Smooth Boot, 12x100mm thru-axle, flat-mount disc |
Drivetrain
| Shifters | Shimano Tiagra hydraulic disc, ST4725 |
|---|---|
| Front Derailleur | Shimano Tiagra, braze-on |
| Rear Derailleur | Shimano Tiagra, GS cage, 10-speed |
| Crankset | Praxis Alba; chainrings: 50/34T |
| Bottom Bracket | Praxis 68mm BSA |
| BB Shell Width | 68 mm |
| Cassette | Shimano Tiagra, 10-speed, 11-34t |
| Chain | KMC X10, 10-Speed |
Cockpit & Contact Points
| Handlebar | Specialized Hover Comp, Alloy, 125mm Drop, 75mm Reach w/Di2 Hole |
|---|---|
| Stem | Future Stem, Comp |
| Saddle | Body Geometry Power Sport, steel rails |
| Seatpost | S-Works Pave |
Wheels & Tires
| Wheels | (F) Axis Elite Disc / (R) Axis Elite Disc |
|---|---|
| Front Tire | Specialized Espoir Sport, 60TPI, wire bead, double BlackBelt protection, 700x28mm |
| Rear Tire | Specialized Espoir Sport, 60TPI, wire bead, double BlackBelt protection, 700x28mm |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements7 sizes · 20 measurements
| Measurement | 44 | 49 | 52 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|---|
| Seat tube | 365 mm | 410 mm | 446 mm | 465 mm | 485 mm | 505 mm | 547 mm |
| Effective top tube | 512 mm | 525 mm | 533 mm | 545 mm | 563 mm | 579 mm | 595 mm |
| Head tube | 90 mm | 100 mm | 112 mm | 125 mm | 143 mm | 170 mm | 205 mm |
| Head-tube angle | 70° | 71.5° | 72° | 72.75° | 73.5° | 73.5° | 74° |
| Seat-tube angle | 74° | 74° | 74° | 74° | 73.5° | 73.5° | 73.5° |
| Chainstay / rear center | 413 mm | 413 mm | 413 mm | 415 mm | 415 mm | 418 mm | 418 mm |
| Wheelbase | 981 mm | 982 mm | 986 mm | 988 mm | 995 mm | 1014 mm | 1024 mm |
| Bottom-bracket drop | 77.5 mm | 77.5 mm | 77.5 mm | 76 mm | 76 mm | 74.5 mm | 74.5 mm |
| Bottom-bracket height | 265 mm | 265 mm | 265 mm | 266 mm | 266 mm | 268 mm | 268 mm |
| Reach | 353 mm | 363 mm | 368 mm | 376 mm | 384 mm | 392 mm | 398 mm |
| Stack | 540 mm | 555 mm | 570 mm | 585 mm | 605 mm | 630 mm | 665 mm |
| Standover height | 682 mm | 715 mm | 743 mm | 762 mm | 783 mm | 805 mm | 844 mm |
| Fork offset / rake | 50 mm | 50 mm | 50 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Front center | 580 mm | 581 mm | 586 mm | 585 mm | 592 mm | 607 mm | 618 mm |
| Trail | 71 mm | 62 mm | 59 mm | 61 mm | 55 mm | 55 mm | 52 mm |
| Fork length / axle-to-crown | 370 mm | 370 mm | 370 mm | 370 mm | 370 mm | 370 mm | 370 mm |
| Seatpost length | 380 mm | 380 mm | 380 mm | 380 mm | 380 mm | 380 mm | 450 mm |
| Crank length | 165 mm | 165 mm | 170 mm | 172.5 mm | 172.5 mm | 175 mm | 175 mm |
| Stem length | 70 mm | 80 mm | 90 mm | 100 mm | 100 mm | 110 mm | 110 mm |
| Handlebar width | 360 mm | 380 mm | 400 mm | 420 mm | 420 mm | 440 mm | 440 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Parts & serviceability
Find replacement parts

Continental Gatorskin Wire Bead Tire Black, 700x28
700x28
Replacement option · verify fit

Specialized SW Mondo 2Bliss Tire Black, 700x28
700x28
Replacement option · verify fit
More parts (6)
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.
Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2021 Specialized Roubaix · Road · Published sizes: 44, 49, 52, 54, 56, 58, 61
Frame and fork
Inspect the frame and fork →Archived: Frame: FACT 10R, Rider First Engineered™ (RFE), FreeFoil Shape Library tubes, threaded BB, 12x142mm thru-axle, flat-mount disc · Fork: Future Shock 1.5 w/ Smooth Boot, 12x100mm thru-axle, flat-mount disc
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano Tiagra hydraulic disc, ST4725 · Front derailleur: Shimano Tiagra, braze-on · Rear derailleur: Shimano Tiagra, GS cage, 10-speed · Crankset: Praxis Alba; chainrings: 50/34T · Bottom bracket: Praxis 68mm BSA · Cassette: Shimano Tiagra, 10-speed, 11-34t · Chain: KMC X10, 10-Speed
Brakes
Inspect the brakes →Wheels and tires
Check wheels and tires →Archived: Wheels: (F) Axis Elite Disc / (R) Axis Elite Disc · Front tire: Specialized Espoir Sport, 60TPI, wire bead, double BlackBelt protection, 700x28mm · Rear tire: Specialized Espoir Sport, 60TPI, wire bead, double BlackBelt protection, 700x28mm
Controls and contact points
Archived: Handlebar: Specialized Hover Comp, Alloy, 125mm Drop, 75mm Reach w/Di2 Hole · Stem: Future Stem, Comp · Seatpost: S-Works Pave · Saddle: Body Geometry Power Sport, steel rails
Before and during the test ride
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Gallery8 images
Checking current listings…
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





