Which size or configuration labels have geometry for the 2017 Specialized Tarmac Disc eTap?

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

What are the reach and stack of the 2017 Specialized Tarmac Disc eTap in size 56?

In size 56, reach is 395 mm and stack is 564 mm.

What is the head tube angle of the 2017 Specialized Tarmac Disc eTap?

The head tube angle is 73.5 degrees in size 56.

What does the 2017 Specialized Tarmac S-Works Disc eTap ship with?

The stock build includes SRAM eTap Hydro, Roval CLX 32, SRAM RED, and Specialized S-Works Toupe.

Which years of the Specialized Tarmac are on Quiver?

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

2017 Specialized Tarmac Disc eTap geometry and specs

Key facts

Brand: Specialized
Model: Tarmac
Model year: 2017
Frame: Disc eTap
Type: Road
Geometry labels: 49, 52, 54, 56, 58, and 61
Drivetrain: SRAM eTap
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.

2017 Specialized Tarmac Disc eTap geometry by size
Measurement	49	52	54	56	58	61
Reach(mm)	386	386	387	395	402	408
Stack(mm)	504	526	543	564	591	612
Head tube angle(°)	72.25	73	73	73.5	73.5	74
Seat tube angle(°)	75.5	74	73.5	73.25	73	72.5
Effective top tube(mm)	518	537	548	565	582	600
Chainstay length(mm)	405	405	405	405	407	410
Wheelbase(mm)	970	970	978	986	1003	1013
BB drop(mm)	71.5	71.5	69	69	67.5	67.5
BB height(mm)	270	270	272.5	272.5	274	274
Standover(mm)	730	755	775	795	826	850
Seat tube length(mm)	431	462	481	501	522	553
Fork length(mm)	368	368	368	368	368	368
Head tube length(mm)	100	120	140	160	190	210

How to read a geometry chart

Stock build

9 parts

Drivetrain

SRAM eTap Hydro

Shifter

SRAM eTap

Derailleur

SRAM Red 22

CassetteSpeeds 11Range 11-28

SRAM Red 22

ChainSpeeds 11

SRAM Red 22

Crankset

Wheels & Tires

Roval CLX 32

Wheelset

Specialized Turbo Cotton

Tire

Brakes

SRAM RED

BrakeBrake type Hydraulic Disc

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 2017 Specialized Tarmac Disc eTap?: Geometry is listed for 49, 52, 54, 56, 58, and 61.
What are the reach and stack of the 2017 Specialized Tarmac Disc eTap in size 56?: In size 56, reach is 395 mm and stack is 564 mm.
What is the head tube angle of the 2017 Specialized Tarmac Disc eTap?: The head tube angle is 73.5 degrees in size 56.
What does the 2017 Specialized Tarmac S-Works Disc eTap ship with?: The stock build includes SRAM eTap Hydro, Roval CLX 32, SRAM RED, and Specialized S-Works Toupe.
Which years of the Specialized Tarmac are on Quiver?: Quiver has the Specialized Tarmac for 2017, 2026, 2020, 2019, 2018, 2016, 2015, 2012, 2011, 2010, 2009, 2008, and 2007.