Which size or configuration labels have geometry for the 2018 Specialized Tarmac Women's Expert?

Geometry is listed for 44, 49, 52, 54, and 56.

What are the reach and stack of the 2018 Specialized Tarmac Women's Expert in size 52?

In size 52, reach is 380 mm and stack is 527 mm.

What is the head tube angle of the 2018 Specialized Tarmac Women's Expert?

The head tube angle is 72.5 degrees in size 52.

What does the 2018 Specialized Tarmac Women's Expert ship with?

The stock build includes Specialized Tarmac SL6, Shimano Ultegra R8000, Roval SLX 24, and Shimano Ultegra R8010.

Which years of the Specialized Tarmac are on Quiver?

Quiver has the Specialized Tarmac for 2018, 2026, 2020, 2019, 2017, 2016, 2015, 2012, 2011, 2010, 2009, 2008, and 2007.

2018 Specialized Tarmac Women's Expert geometry and specs

Key facts

Brand: Specialized
Model: Tarmac
Model year: 2018
Frame: Women's Expert
Type: Road
Geometry labels: 44, 49, 52, 54, and 56
Drivetrain: Shimano Ultegra R8000
Wheels: Roval SLX 24
Geometry: Complete for every size
Source: specialized.com
Checked: Oct 22, 2026

Geometry by size

Geometry drawing, size 52, to scale.

2018 Specialized Tarmac Women's Expert geometry by size
Measurement	44	49	52	54	56
Reach(mm)	365	375	380	384	395
Stack(mm)	500	514	527	544	565
Head tube angle(°)	70.5	71.75	72.5	73	73.5
Seat tube angle(°)	76	75.5	74	74	73.5
Effective top tube(mm)	490	508	531	540	562
Chainstay length(mm)	405	405	405	405	405
Wheelbase(mm)	964	968	970	973	985
BB drop(mm)	74	74	74	72	72
BB height(mm)	266	266	266	268	268
Standover(mm)	730	740	755	775	795
Seat tube length(mm)	400	431	462	481	501
Fork length(mm)	363	363	363	363	363
Head tube length(mm)	105	115	126	143	163

How to read a geometry chart

Stock build

10 parts

Frame

Specialized Tarmac SL6

Frame

Drivetrain

Shimano Ultegra R8000

ShifterSpeeds 11

Shimano Ultegra R8000

Derailleur

Shimano Ultegra R8000

CassetteRange 11-30

Shimano Ultegra

Chain

Shimano Ultegra R8000

Crankset

Wheels & Tires

Roval SLX 24

Wheelset

Specialized S-Works Turbo

TireTPI 120 TPI

Brakes

Shimano Ultegra R8010

Brake

Seatpost & Saddle

Specialized Oura Pro

Saddle

Keep your Tarmac Women's Expert in Quiver

Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.

Free on App Store Free on Google PlayFree for your first bike, on iPhone and Android.

Already have Quiver? Open this build

Manufacturer

Keep the factory build and your current parts distinct

Bikes to compare with the Tarmac

Same kind of bike with the closest frame angles and proportions. Differences are how each one compares to this bike.

2017 Specialized Allez DSW SL Sprint Limited Edition II
Steeper head angle.
Compare
2020 Specialized Tarmac SL6 Frameset
Close on every number both bikes have.
Compare
2020 Specialized Venge Sagan Collection LTD
Steeper head angle.
Compare
2020 Specialized Allez Sprint
Higher bottom bracket, steeper head angle.
Compare

Quick answers

Which size or configuration labels have geometry for the 2018 Specialized Tarmac Women's Expert?: Geometry is listed for 44, 49, 52, 54, and 56.
What are the reach and stack of the 2018 Specialized Tarmac Women's Expert in size 52?: In size 52, reach is 380 mm and stack is 527 mm.
What is the head tube angle of the 2018 Specialized Tarmac Women's Expert?: The head tube angle is 72.5 degrees in size 52.
What does the 2018 Specialized Tarmac Women's Expert ship with?: The stock build includes Specialized Tarmac SL6, Shimano Ultegra R8000, Roval SLX 24, and Shimano Ultegra R8010.
Which years of the Specialized Tarmac are on Quiver?: Quiver has the Specialized Tarmac for 2018, 2026, 2020, 2019, 2017, 2016, 2015, 2012, 2011, 2010, 2009, 2008, and 2007.