Which size or configuration labels have geometry for the 2021 Specialized Tarmac SL6?

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

What are the reach and stack of the 2021 Specialized Tarmac SL6 in size 54?

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

What is the head tube angle of the 2021 Specialized Tarmac SL6?

The head tube angle is 73 degrees in size 54.

What does the 2021 Specialized Tarmac SL6 - Shimano Tiagra ship with?

The stock build includes Specialized Tarmac SL6, Shimano Tiagra, Specialized Axis Sport, and Specialized Power Sport.

Which years of the Specialized Tarmac SL6 are on Quiver?

Quiver has the Specialized Tarmac SL6 for 2021, 2022, 2020, and 2019.

2021 Specialized Tarmac SL6 geometry and specs

Key facts

Brand: Specialized
Model: Tarmac SL6
Model year: 2021
Type: Road
Geometry labels: 44, 49, 52, 54, 56, 58, and 61
Drivetrain: Shimano Tiagra
Wheels: Specialized Axis Sport
Geometry: Complete for every size
Source: specialized.com
Checked: Sep 5, 2026

Geometry by size

Geometry drawing, size 54, to scale.

2021 Specialized Tarmac SL6 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
Chainstay length(mm)	410	410	410	410	410	410	410
Wheelbase(mm)	969	973	975	978	990	1005	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)	435	451	481	499	519	540	570
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

8 parts

Frame

Specialized Tarmac SL6

Frame

Drivetrain

Shimano Tiagra

ShifterCompatibility 10-speed

Shimano Tiagra

DerailleurMaximum cog 32 tActuation type Mechanical

KMC X10

ChainSpeeds 10

Shimano Tiagra 4700

Crankset

Wheels & Tires

Specialized Axis Sport

Wheelset

Specialized Turbo Pro

Tire

Seatpost & Saddle

Specialized Power Sport

SaddleBase / shell Body Geometry

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Quick answers

Which size or configuration labels have geometry for the 2021 Specialized Tarmac SL6?: Geometry is listed for 44, 49, 52, 54, 56, 58, and 61.
What are the reach and stack of the 2021 Specialized Tarmac SL6 in size 54?: In size 54, reach is 384 mm and stack is 544 mm.
What is the head tube angle of the 2021 Specialized Tarmac SL6?: The head tube angle is 73 degrees in size 54.
What does the 2021 Specialized Tarmac SL6 - Shimano Tiagra ship with?: The stock build includes Specialized Tarmac SL6, Shimano Tiagra, Specialized Axis Sport, and Specialized Power Sport.
Which years of the Specialized Tarmac SL6 are on Quiver?: Quiver has the Specialized Tarmac SL6 for 2021, 2022, 2020, and 2019.