Specialized Roubaix SL8

Name: Specialized Roubaix SL8
Brand: Specialized

2025 RoadEndurance Manufacturer page

Specialized Roubaix SL8, color Morning Mist / Smoke

Price: Not published

Prices shown first for United States
Europe: €2,500 Last known price
Wheels: 700c
Drivetrain: 2 × 10 34–50t / 11–34t
Gear range: 455%
Weight: 9.46 kg 20.9 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Sizes

Size guide

44cm
49cm
52cm
54cm
56cm
58cm
61cm

The manufacturer did not publish rider heights for these sizes.

Components

11 of 16 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

FACT 10R, Rider First Engineered™ (RFE), FreeFoil Shape Library tubes, threaded BB, 12x142mm thru-axle, flat-mount disc Not identified

Suspension

1 part

Fork

Future Shock 3.1 w/ Smooth Boot, FACT Carbon 12x100mm, thru-axle, flat-mount disc Not identified

Drivetrain

7 parts

Bottom bracket
- Shimano
Cassette
- Shimano Tiagra 11–34t
Chain
- KMC X10 10 speeds
Crankset
- Shimano Tiagra 50/34t
Front derailleur
- Shimano 105 FD-R7100 2 speeds
FD-R7100
Rear derailleur
- Shimano Tiagra
Shifters
- Shimano Tiagra ST-4720
ST-4720

Brakes

1 part

Brakes
- Shimano Tiagra

Wheels and tires

2 parts

Rims

Front: Axis Elite Disc, Rear: Axis Elite Disc Not identified
Tires

Front: Road Sport, 700x32c, Rear: Road Sport, 700x32c Not identified

Cockpit and contact points

4 parts

Handlebar
- Specialized
Saddle

Body Geometry Power Sport, steel rails Not identified
Seatpost
- S-Works
Stem
- Ritchey Comp

Sizes and geometry

7 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 54cm

Table

Geometry diagram unavailable

The drawing needs wheelbase, reach, stack, head tube angle, seat tube angle, head tube length, seat tube length, chainstay length and bottom bracket drop / Bottom bracket height, which the manufacturer did not publish. Available facts remain in the table.

Size

Complete manufacturer geometry table 7 published sizes

Complete manufacturer geometry by size
Measurement
Crank lengthmm	165	165	170	172.5	172.5	175	175
Handlebar widthmm	360	380	400	420	420	440	440
Stem lengthmm	70	80	90	100	100	110	110
Seatpost lengthmm	380	380	380	380	380	450	450

Not published by the manufacturer: Reach, Stack, Top tube length, Seat tube length, Head tube length, Head tube angle, Seat tube angle, Chainstay length, Wheelbase, Front center, Bottom bracket drop, Bottom bracket height, Standover height, Fork rake, Trail, Stack/reach ratio, Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon
Bicycle weight: 9.46 kg

20.9 lb

Suspension

Suspension configuration: Hardtail

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 29.0 in
Highest gear: 131.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire clearance: Maximum tire width: 40c
Tire width: 32c
Travel: Front: Additional specification: Not available: No
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

29.0 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2025
Sample: 546 bicycles with this information
Coverage: 81.8% of the class

Highest gear

131.8 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2025
Sample: 546 bicycles with this information
Coverage: 81.8% of the class

Shifting

Mechanical

356 of 663 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2025
Sample: 663 bicycles with this information
Coverage: 99.4% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.1 km/h
Highest gear: 50.5 km/h

Total gear range 455%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 29.0–131.8 gear inches
Class reference (p10–p90): 26.6–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Endurance Model year: 2025
Lowest gear: 546 bicycles with this information, 81.8% of the class
Highest gear: 546 bicycles with this information, 81.8% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds
Specification	This bicycle Specialized Roubaix SL8	Specialized Roubaix SL8 Comp	Specialized Roubaix SL8 Comp Shimano 105 Di2	Specialized Roubaix SL8 Expert	Specialized Roubaix SL8 Expert SRAM Rival eTap AXS	Specialized Roubaix SL8 Pro
Frame
Bicycle weight	9.46 kg	8.97 kg	8.97 kg	8.62 kg	8.62 kg	8.1 kg
Drivetrain
Smallest chainring	34	34	34	33	33	34
Largest chainring	50	50	50	46	46	50
Rear sprockets	10	12	12	12	12	12
Smallest sprocket	11	11	11	10	10	11
Largest sprocket	34	36	36	36	36	34
Lowest gear	29.0 in	27.4 in	27.4 in	26.6 in	26.6 in	29.0 in
Highest gear	131.8 in	131.8 in	131.8 in	133.4 in	133.4 in	131.8 in
Cockpit
Shifting	Mechanical	Electronic	Electronic	Electronic	Electronic	Electronic
Other specifications
Wheel material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Carbon