Which size or configuration labels have geometry for the 2015 Specialized Sirrus Pro Carbon Disc?

Geometry is listed for S, M, L, and XL.

What are the reach and stack of the 2015 Specialized Sirrus Pro Carbon Disc in size L?

In size L, reach is 410 mm and stack is 616 mm.

What is the head tube angle of the 2015 Specialized Sirrus Pro Carbon Disc?

The head tube angle is 72 degrees in size L.

What does the 2015 Specialized Sirrus Pro Carbon Disc ship with?

The stock build includes Specialized Sirrus FACT, SRAM SL X1, Specialized AXIS 4.0, and Magura MTS.

Which years of the Specialized Sirrus are on Quiver?

Quiver has the Specialized Sirrus for 2015, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2014, 2013, 2012, 2011, 2010, 2009, and 2008.

2015

2015 Specialized Sirrus Pro Carbon Disc

Commuter

The 2015 Specialized Sirrus Pro Carbon Disc sits more aggressive than most commuter bikes, with a steeper head angle and a shorter rear center. Reach 395 to 420 mm, stack 574 to 650 mm. The Sirrus Pro Carbon Disc build comes with SRAM X1 shifting and Specialized AXIS 4.0 wheels.

Compare with 750+ commuter bikes

Source: specialized.com. Checked Oct 22, 2026.

Key facts

Brand: Specialized
Model: Sirrus
Model year: 2015
Frame: Pro Carbon Disc
Type: Commuter
Geometry labels: S, M, L, and XL
Drivetrain: SRAM X1
Wheels: Specialized AXIS 4.0
Geometry: Complete for every size
Source: specialized.com
Checked: Oct 22, 2026

Geometry by size

Geometry drawing, size M, to scale.

2015 Specialized Sirrus Pro Carbon Disc geometry by size
Measurement	S	M	L	XL
Reach(mm)	395	403	410	420
Stack(mm)	574	591	616	650
Head tube angle(°)	71	71.5	72	72
Seat tube angle(°)	73.25	73.5	73	73
Effective top tube(mm)	570	580	600	620
Chainstay length(mm)	435	435	435	435
Wheelbase(mm)	1051	1060	1070	1091
BB drop(mm)	70	70	70	70
Standover(mm)	752	785	822	861
Seat tube length(mm)	440	485	530	570
Head tube length(mm)	150	165	190	225

How to read a geometry chart

Stock build

10 parts

Frame

Specialized Sirrus FACT

Frame

Drivetrain

SRAM SL X1

ShifterSpeeds 11

SRAM X1

DerailleurSpeeds 11

SRAM XG-1180

CassetteSpeeds 11Range 10-42

SRAM X1

Chain

SRAM Force CX1

Crankset

Wheels & Tires

Specialized AXIS 4.0

Wheelset

Brakes

Magura MTS

Brake

Seatpost & Saddle

Specialized Pro Pave

Seatpost

Specialized Phenom Expert

Saddle

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Manufacturer

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Quick answers

Which size or configuration labels have geometry for the 2015 Specialized Sirrus Pro Carbon Disc?: Geometry is listed for S, M, L, and XL.
What are the reach and stack of the 2015 Specialized Sirrus Pro Carbon Disc in size L?: In size L, reach is 410 mm and stack is 616 mm.
What is the head tube angle of the 2015 Specialized Sirrus Pro Carbon Disc?: The head tube angle is 72 degrees in size L.
What does the 2015 Specialized Sirrus Pro Carbon Disc ship with?: The stock build includes Specialized Sirrus FACT, SRAM SL X1, Specialized AXIS 4.0, and Magura MTS.
Which years of the Specialized Sirrus are on Quiver?: Quiver has the Specialized Sirrus for 2015, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2014, 2013, 2012, 2011, 2010, 2009, and 2008.