Which size or configuration labels have geometry for the 2018 Specialized Roubaix Pro?

Geometry is listed for 49, 52, 54, 56, 58, and 61.

What are the reach and stack of the 2018 Specialized Roubaix Pro in size 56?

In size 56, reach is 381 mm and stack is 611 mm.

What is the head tube angle of the 2018 Specialized Roubaix Pro?

The head tube angle is 73.5 degrees in size 56.

What does the 2018 Specialized Roubaix Pro ship with?

The stock build includes Shimano Dura-Ace R9120, Roval CL 32, Shimano Dura-Ace R9120, and Specialized CG-R.

Which years of the Specialized Roubaix are on Quiver?

Quiver has the Specialized Roubaix for 2018, 2027, 2026, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2017, 2016, 2015, 2014, 2012, 2011, 2010, 2009, 2008, and 2007.

2018 Specialized Roubaix Pro geometry and specs

Key facts

Brand: Specialized
Model: Roubaix
Model year: 2018
Frame: Pro
Type: Road
Geometry labels: 49, 52, 54, 56, 58, and 61
Drivetrain: Shimano Dura-Ace R9100
Wheels: Roval CL 32
Geometry: Complete for every size
Source: specialized.com
Checked: Oct 22, 2026

Geometry by size

Geometry drawing, size 54, to scale.

2018 Specialized Roubaix Pro geometry by size
Measurement	49	52	54	56	58	61
Reach(mm)	369	371	375	381	386	392
Stack(mm)	549	569	585	611	644	665
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
Effective top tube(mm)	527	534.9	545	561.8	576.3	588.5
Chainstay length(mm)	413	413	415	415	418	418
Wheelbase(mm)	981	987	987	993	1011	1018
BB drop(mm)	77.5	77.5	76	76	74.5	74.5
Standover(mm)	715.5	743	762	785	813	844.3
Seat tube length(mm)	425	462	481	501	522	563
Head tube length(mm)	90	110	125	150	185	205

How to read a geometry chart

Stock build

10 parts

Drivetrain

Shimano Dura-Ace R9120

Shifter

Shimano Dura-Ace R9100

Derailleur

Shimano Ultegra R8000

CassetteRange 11-30

Shimano Ultegra

Chain

Praxis 6806

Bottom bracket

Wheels & Tires

Roval CL 32

Wheelset

Specialized S-Works Turbo

TireTPI 180 TPI

Brakes

Shimano Dura-Ace R9120

BrakeBrake type hydraulic disc

Seatpost & Saddle

Specialized CG-R

Seatpost

Specialized Phenom Expert

Saddle

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Manufacturer

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Quick answers

Which size or configuration labels have geometry for the 2018 Specialized Roubaix Pro?: Geometry is listed for 49, 52, 54, 56, 58, and 61.
What are the reach and stack of the 2018 Specialized Roubaix Pro in size 56?: In size 56, reach is 381 mm and stack is 611 mm.
What is the head tube angle of the 2018 Specialized Roubaix Pro?: The head tube angle is 73.5 degrees in size 56.
What does the 2018 Specialized Roubaix Pro ship with?: The stock build includes Shimano Dura-Ace R9120, Roval CL 32, Shimano Dura-Ace R9120, and Specialized CG-R.
Which years of the Specialized Roubaix are on Quiver?: Quiver has the Specialized Roubaix for 2018, 2027, 2026, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2017, 2016, 2015, 2014, 2012, 2011, 2010, 2009, 2008, and 2007.