Which size or configuration labels have geometry for the 2026 Specialized Sirrus X 4.0?

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

What are the reach and stack of the 2026 Specialized Sirrus X 4.0 in size M?

In size M, reach is 382 mm and stack is 635 mm.

What is the head tube angle of the 2026 Specialized Sirrus X 4.0?

The head tube angle is 71 degrees in size M.

What does the 2026 Specialized Sirrus X 4.0 ship with?

The stock build includes Specialized A1SL, Specialized FACT 9r, Shimano CUES U6000, and Pathfinder.

Which years of the Specialized Sirrus X are on Quiver?

Quiver has the Specialized Sirrus X for 2026, 2025, 2024, 2023, 2022, 2021, 2020, and 2019.

2026

2026 Specialized Sirrus X 4.0

Commuter

The 2026 Specialized Sirrus X 4.0 sits more upright than most commuter bikes. Reach 355 to 398 mm, stack 587 to 672 mm. The Sirrus X 4.0 build comes with Shimano Shadow Plus CUES shifting and Pathfinder tires.

Compare with 770+ commuter bikes

Source: specialized.com. Checked Oct 23, 2026.

Key facts

Brand: Specialized
Model: Sirrus X
Model year: 2026
Frame: 4.0
Type: Commuter
Geometry labels: XXS, XS, S, M, L, and XL
Drivetrain: Shimano Shadow Plus CUES
Fork: Specialized FACT 9r
Geometry: Complete for every size
Source: specialized.com
Checked: Oct 23, 2026

Geometry by size

2026 Specialized Sirrus X 4.0 geometry by size
Measurement	XXS	XS	S	M	L	XL
Reach(mm)	355	371	376	382	386	398
Stack(mm)	587	590	606	635	651	672
Head tube angle(°)	69.5	70	70	71	71	71
Seat tube angle(°)	73.5	73.5	73.5	73.5	73.5	73.5
Effective top tube(mm)	529 (from the manufacturer)	549 (from the manufacturer)	559 (from the manufacturer)	573 (from the manufacturer)	581 (from the manufacturer)	599 (from the manufacturer)
Chainstay length(mm)	440	440	440	440	440	440
BB drop(mm)	70	70	70	70	70	70
BB height(mm)	284	284	284	284	284	284
Standover(mm)	700	722	750	778	810	831
Seat tube length(mm)	360	395	440	470	510	530
Fork length(mm)	395	395	395	395	395	395
Head tube length(mm)	111	125	143	169	186	208

Sources agreeManufacturer

How to read a geometry chart

Stock build

15 parts

Frame

Specialized A1SL

Frame

Suspension

Specialized FACT 9r

Fork

Drivetrain

Shimano CUES U6000

Shifter

Shimano Shadow Plus CUES

Derailleur

Shimano CS-LG400-11

CassetteSpeeds 11

KMC eGlide

Chain

Prowheel XXS

Crankset

Narrow Wide

Chainring

Threaded BSA

Bottom bracket

Wheels & Tires

Pathfinder

Tire

Brakes

Shimano MT200

BrakeCaliper mount Post Mount

Cockpit

Mini Rise

Handlebar

Future Stem

Stem

Specialized Neutralizer

Grips

Seatpost & Saddle

Power Sport

Saddle

Keep your Sirrus X 4.0 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

Quick answers

Which size or configuration labels have geometry for the 2026 Specialized Sirrus X 4.0?: Geometry is listed for XXS, XS, S, M, L, and XL.
What are the reach and stack of the 2026 Specialized Sirrus X 4.0 in size M?: In size M, reach is 382 mm and stack is 635 mm.
What is the head tube angle of the 2026 Specialized Sirrus X 4.0?: The head tube angle is 71 degrees in size M.
What does the 2026 Specialized Sirrus X 4.0 ship with?: The stock build includes Specialized A1SL, Specialized FACT 9r, Shimano CUES U6000, and Pathfinder.
Which years of the Specialized Sirrus X are on Quiver?: Quiver has the Specialized Sirrus X for 2026, 2025, 2024, 2023, 2022, 2021, 2020, and 2019.