Which size or configuration labels have geometry for the 2018 Specialized Tarmac Men's Ultralight?

Geometry is listed for 44, 49, 52, 54, 56, 58, and 61.

What are the reach and stack of the 2018 Specialized Tarmac Men's Ultralight in size 54?

In size 54, reach is 384 mm and stack is 544 mm.

What is the head tube angle of the 2018 Specialized Tarmac Men's Ultralight?

The head tube angle is 73 degrees in size 54.

What does the 2018 Specialized Tarmac Men's S-Works Ultralight ship with?

The stock build includes Specialized S-Works Tarmac SL6, Shimano Dura-Ace R9150 Di2, Roval CLX 32, and Specialized eecycleworks eebrake.

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 Men's Ultralight geometry and specs

Key facts

Brand: Specialized
Model: Tarmac
Model year: 2018
Frame: Men's Ultralight
Type: Road
Geometry labels: 44, 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 Tarmac Men's Ultralight geometry by size
Measurement	44	49	52	54	56	58	61
Reach(mm)	365	375	380	384	395	402	408
Stack(mm)	500	514	527	544	565	591	612
Head tube angle(°)	70.5	71.75	72.5	73	73.5	73.5	74
Seat tube angle(°)	76	75.5	74	74	73.5	73.5	73
Effective top tube(mm)	490	508	531	540	562	577	595
Chainstay length(mm)	405	405	405	405	405	407	410
Wheelbase(mm)	964	968	970	973	985	1002	1012
BB drop(mm)	74	74	74	72	72	72	72
BB height(mm)	266	266	266	268	268	268	268
Standover(mm)	730	740	755	775	795	826	850
Seat tube length(mm)	400	431	462	481	501	522	553
Fork length(mm)	363	363	363	363	363	363	363
Head tube length(mm)	105	115	126	143	163	190	210

How to read a geometry chart

Stock build

9 parts

Frame

Specialized S-Works Tarmac SL6

Frame

Drivetrain

Shimano Dura-Ace R9150 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

TireTPI 320 TPI

Brakes

Specialized eecycleworks eebrake

Brake

Seatpost & Saddle

Specialized S-Works Toupe

Saddle

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Manufacturer

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Quick answers

Which size or configuration labels have geometry for the 2018 Specialized Tarmac Men's Ultralight?: Geometry is listed for 44, 49, 52, 54, 56, 58, and 61.
What are the reach and stack of the 2018 Specialized Tarmac Men's Ultralight in size 54?: In size 54, reach is 384 mm and stack is 544 mm.
What is the head tube angle of the 2018 Specialized Tarmac Men's Ultralight?: The head tube angle is 73 degrees in size 54.
What does the 2018 Specialized Tarmac Men's S-Works Ultralight ship with?: The stock build includes Specialized S-Works Tarmac SL6, Shimano Dura-Ace R9150 Di2, Roval CLX 32, and Specialized eecycleworks eebrake.
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.