Rear tire: 700C×28.
Velopedia Bicycle Archive
2018 Specialized Roubaix Expert
Original specifications: geometry for 6 published sizes.
Selling this bike? Get the spec link and selling options
At a glance
- Model year
- 2018
- Category
- Road
- Original MSRP
- $3,600.00
- Sizes
- 49, 52, 54, 56, 58, 61
- Colors
- Gloss Carbon/Chameleon Purple/Metallic White Silver, Gloss Flo Red/Red Flake/Black Reflective Clean
- Geometry
- 6 manufacturer sizes
- In this record
- 20 specifications · 4 archived images · original MSRP · geometry
- Archive ID
- 900003288
Model history 3 other years
Original buildCarbon Fiber
Frameset
| Frame Construction | Specialized FACT 10r carbon, Endurance Geometry, Rider-First Engineered™, 12x142mm thru-axle, Future Shock suspension, 20mm of travel, flat disc mounts |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | Specialized FACT carbon, 12x100mm thru-axle |
| Fork Material | Carbon Fiber |
Drivetrain
| Shifters | Shimano Ultegra 8020, hydraulic disc |
|---|---|
| Front Derailleur | Shimano Ultegra 8000, braze-on |
| Rear Derailleur | Shimano Ultegra 8000, long cage, 11-speed |
| Crankset | Shimano Ultegra R8000; chainrings: 50/34T |
| Bottom Bracket | Shimano Ultegra |
| Cassette | Shimano 11-speed Ultegra 8000, 11-32t |
| Chain | Shimano Ultegra, 11-speed |
| Pedals | Nylon, 105x78x28mm, loose balls w/ reflectors |
Brakes
| Brakes | (F) Shimano Ultegra 8020, hydraulic disc / (R) Shimano Ultegra 8020, hydraulic disc |
|---|
Cockpit & Contact Points
| Handlebar | Specialized Expert Hover, alloy, 75x125mm |
|---|---|
| Stem | Specialized Pro SL, alloy, 4-bolt |
| Saddle | Body Geometry Phenom Expert, Adaptive Edge design, hollow titanium rails, carbon fiber base, 143mm |
| Seatpost | Specialized CG-R, FACT carbon, single-bolt, 27.2mm |
Wheels & Tires
| Wheels | (F) Roval SLX 24 Disc, DT Swiss 350 hubs, DT Swiss Competition spokes, 24h / (R) Roval SLX 24 Disc, DT Swiss 350 hubs, DT Swiss Competition spokes, 24h |
|---|---|
| Front Tire | Turbo Pro, 60 TPI, folding bead, BlackBelt protection, 700x28mm |
| Rear Tire | Turbo Pro, 60 TPI, folding bead, BlackBelt protection, 700x28mm |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements6 sizes · 17 measurements
| Measurement | 49 | 52 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Effective top tube | 527 mm | 534.9 mm | 545 mm | 561.8 mm | 576.3 mm | 588.5 mm |
| Head tube | 90 mm | 110 mm | 125 mm | 150 mm | 185 mm | 205 mm |
| Head-tube angle | 72° | 72.25° | 72.75° | 73.5° | 73.5° | 74° |
| Seat-tube angle | 74° | 74° | 74° | 73.5° | 73.5° | 73.5° |
| Chainstay / rear center | 413 mm | 413 mm | 415 mm | 415 mm | 418 mm | 418 mm |
| Wheelbase | 981 mm | 987 mm | 987 mm | 993 mm | 1011 mm | 1018 mm |
| Bottom-bracket drop | 77.5 mm | 77.5 mm | 76 mm | 76 mm | 74.5 mm | 74.5 mm |
| Reach | 369 mm | 371 mm | 375 mm | 381 mm | 386 mm | 392 mm |
| Stack | 549 mm | 569 mm | 585 mm | 611 mm | 644 mm | 665 mm |
| Standover height | 715.5 mm | 743 mm | 762 mm | 785 mm | 813 mm | 844.3 mm |
| Fork offset / rake | 50 mm | 50 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Front center | 580 mm | 586 mm | 584 mm | 590 mm | 605 mm | 612 mm |
| Trail | 58.5 mm | 57 mm | 61 mm | 55 mm | 55 mm | 52 mm |
| Seatpost length | 350 mm | 350 mm | 400 mm | 400 mm | 450 mm | 450 mm |
| Crank length | 170 mm | 170 mm | 172.5 mm | 172.5 mm | 175 mm | 175 mm |
| Stem length | 80 mm | 90 mm | 100 mm | 100 mm | 110 mm | 110 mm |
| Handlebar width | 400 mm | 420 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

Shimano SLX/105 CN-HG601 11-Speed Chain Grey, 126 Links
126 Links
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: 2018 Specialized Roubaix Expert · Road · Published sizes: 49, 52, 54, 56, 58, 61
Frame and fork
Inspect the frame and fork →Archived: Frame: Specialized FACT 10r carbon, Endurance Geometry, Rider-First Engineered™, 12x142mm thru-axle, Future Shock suspension, 20mm of travel, flat disc mounts · Fork: Specialized FACT carbon, 12x100mm thru-axle · Carbon Fiber
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano Ultegra 8020, hydraulic disc · Front derailleur: Shimano Ultegra 8000, braze-on · Rear derailleur: Shimano Ultegra 8000, long cage, 11-speed · Crankset: Shimano Ultegra R8000; chainrings: 50/34T · Bottom bracket: Shimano Ultegra · Cassette: Shimano 11-speed Ultegra 8000, 11-32t · Chain: Shimano Ultegra, 11-speed
Brakes
Inspect the brakes →Archived: Brakes: (F) Shimano Ultegra 8020, hydraulic disc / (R) Shimano Ultegra 8020, hydraulic disc
Wheels and tires
Check wheels and tires →Archived: Wheels: (F) Roval SLX 24 Disc, DT Swiss 350 hubs, DT Swiss Competition spokes, 24h / (R) Roval SLX 24 Disc, DT Swiss 350 hubs, DT Swiss Competition spokes, 24h · Front tire: Turbo Pro, 60 TPI, folding bead, BlackBelt protection, 700x28mm · Rear tire: Turbo Pro, 60 TPI, folding bead, BlackBelt protection, 700x28mm
Controls and contact points
Archived: Handlebar: Specialized Expert Hover, alloy, 75x125mm · Stem: Specialized Pro SL, alloy, 4-bolt · Seatpost: Specialized CG-R, FACT carbon, single-bolt, 27.2mm · Saddle: Body Geometry Phenom Expert, Adaptive Edge design, hollow titanium rails, carbon fiber base, 143mm · Pedals: Nylon, 105x78x28mm, loose balls w/ reflectors
Before and during the test ride
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Gallery4 images
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





