Specialized Roubaix SL8 Shimano Tiagra

Name: Specialized Roubaix SL8 Shimano Tiagra
Brand: Specialized

2027 RoadEndurance Manufacturer page

Specialized Roubaix SL8 Shimano Tiagra, color Gloss Redwood Metallic / White

Last known price: $2,999

Prices shown first for United States
Wheels: 700c
Drivetrain: 2 × 11 34–50t / 11–36t
Gear range: 481%
Weight: 9.44 kg 20.8 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 CS-RS400-11 11 speeds 11–36t
CS-RS400-11CS-RS400
Chain
- Shimano CN-LG500
CN-LG500
Crankset
- Shimano Tiagra FC-R4000 11 speeds 50/34t
FC-R4000
Front derailleur
- Shimano Tiagra FD-R4000 2 speeds
FD-R4000
Rear derailleur
- Shimano Tiagra RD-R4000 11 speeds
RD-R4000
Shifters
- Shimano Tiagra

Brakes

1 part

Brakes
- Shimano BR-RS405
BR-RS405

Wheels and tires

2 parts

Rims

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

Front: Roadsport Wirebead Tire 700x32, Rear: Roadsport Wirebead Tire 700x32 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

Reach 381mm

Stack 585mm

Wheelbase 1005mm

Head angle 72.3°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 7 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	353	363	370	381	389	397	403
Stackmm	543	549	566	585	605	630	665
Top tube lengthmm	503	523	534	550	569	584	600
Seat tube lengthmm	365	410	445	465	485	505	545
Head tube lengthmm	90	90	105	122	140	168	202
Head tube angle	69.3°	70.8°	71.5°	72.3°	73°	73°	73.5°
Seat tube angle	75°	74°	74°	74°	73.5°	73.5°	73.5°
Chainstay lengthmm	418	418	418	420	420	423	423
Wheelbasemm	994	992	988	1005	1012	1031	1042
Front centermm	589	587	593	598	604	620	631
Bottom bracket dropmm	80	80	80	78	78	78	78
Bottom bracket heightmm	269	269	269	270	270	271	271
Standover heightmm	686	719	747	766	787	809	847
Fork rakemm	52	52	52	47	47	47	47
Trailmm	76	66	62	61	57	57	54
Stack/reach ratio	1.54	1.51	1.53	1.54	1.56	1.59	1.65
Suspension and parts
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: 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: 9.44 kg

20.8 lb

Suspension

Suspension configuration: Hardtail

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 27.4 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

27.4 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2027
Sample: 109 bicycles with this information
Coverage: 84.4% of the class

Highest gear

131.8 gear inches

This value is within the central range for this class.

Cohort: Road / Endurance Model year: 2027
Sample: 109 bicycles with this information
Coverage: 84.4% of the class

Shifting

Mechanical

79 of 128 bicycles with this information use electronic shifting.

Cohort: Road / Endurance Model year: 2027
Sample: 128 bicycles with this information
Coverage: 99.2% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.5 km/h
Highest gear: 50.5 km/h

Total gear range 481%

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: 27.4–131.8 gear inches
Class reference (p10–p90): 25.8–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Endurance Model year: 2027
Lowest gear: 109 bicycles with this information, 84.4% of the class
Highest gear: 109 bicycles with this information, 84.4% 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 2027 builds
Specification	This bicycle Specialized Roubaix SL8 Shimano Tiagra	Specialized Roubaix SL8 Comp Shimano 105 Di2	Specialized Roubaix SL8 Comp SRAM Rival AXS	Specialized Roubaix SL8 Expert SRAM Force AXS	Specialized Roubaix SL8 Pro SRAM Force AXS	Specialized Roubaix SL8 Sport Shimano 105
Frame
Bicycle weight	9.44 kg	8.91 kg	8.82 kg	8.1 kg	8.05 kg	8.97 kg
Drivetrain
Smallest chainring	34	34	33	33	33	36
Largest chainring	50	50	46	46	46	52
Rear sprockets	11	12	12	12	12	12
Smallest sprocket	11	11	10	10	10	11
Lowest gear	27.4 in	27.4 in	26.6 in	26.6 in	26.6 in	29.0 in
Highest gear	131.8 in	131.8 in	133.4 in	133.4 in	133.4 in	137.1 in
Cockpit
Shifting	Mechanical	Electronic	Electronic	Electronic	Electronic	Mechanical
Other specifications
Wheel material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Aluminum
Power meter	Not informed	Not informed	Not informed	Not informed	SRAM Force E1, Quarq Power Meter, 46/33TAdditional specification: Model display: Force AXSAdditional specification: Model id: force-axs	Not informed