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

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

What are the reach and stack of the 2018 Specialized Roubaix McLaren 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 McLaren?

The head tube angle is 73.5 degrees in size 56.

What does the 2018 Specialized Roubaix S-Works McLaren Dura-Ace Di2 ship with?

The stock build includes Shimano Dura-Ace Di2, Roval CLX 32, Shimano Dura-Ace R9170 Di2, 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 McLaren geometry and specs

Key facts

Brand: Specialized
Model: Roubaix
Model year: 2018
Frame: McLaren
Type: Road
Geometry labels: 49, 52, 54, 56, 58, and 61
Drivetrain: Shimano Dura-Ace R9150 Di2
Wheels: Roval CLX 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 McLaren 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

9 parts

Drivetrain

Shimano Dura-Ace Di2

Shifter

Shimano Dura-Ace R9150 Di2

Derailleur

Shimano Dura-Ace R9100

CassetteSpeeds 11Range 11-30Freehub body HG Spline L

Shimano Dura-Ace

ChainSpeeds 11

Wheels & Tires

Roval CLX 32

Wheelset

Specialized Turbo Cotton

Tire

Brakes

Shimano Dura-Ace R9170 Di2

BrakeBrake type hydraulic disc

Seatpost & Saddle

Specialized CG-R

Seatpost

Specialized S-Works Phenom GT

Saddle

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Manufacturer

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Quick answers

Which size or configuration labels have geometry for the 2018 Specialized Roubaix McLaren?: Geometry is listed for 49, 52, 54, 56, 58, and 61.
What are the reach and stack of the 2018 Specialized Roubaix McLaren 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 McLaren?: The head tube angle is 73.5 degrees in size 56.
What does the 2018 Specialized Roubaix S-Works McLaren Dura-Ace Di2 ship with?: The stock build includes Shimano Dura-Ace Di2, Roval CLX 32, Shimano Dura-Ace R9170 Di2, 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.