Which size or configuration labels have geometry for the 2018 Specialized Stumpjumper ST Women's Comp Alloy 29?

Geometry is listed for S, M, and L.

What are the reach and stack of the 2018 Specialized Stumpjumper ST Women's Comp Alloy 29 in size M?

In size M, reach is 435 mm and stack is 612 mm.

What is the head tube angle of the 2018 Specialized Stumpjumper ST Women's Comp Alloy 29?

The head tube angle is 67.5 degrees in every size.

Which years of the Specialized Stumpjumper ST are on Quiver?

Quiver has the Specialized Stumpjumper ST for 2018, 2020, and 2019.

2018 Specialized Stumpjumper ST Women's Comp Alloy 29 geometry and specs

Key facts

Brand: Specialized
Model: Stumpjumper ST
Model year: 2018
Frame: Women's Comp Alloy 29
Type: Trail
Geometry labels: S, M, and L
Drivetrain: Shimano XT
Fork: Fox FLOAT 34 Rhythm
Rear shock: Fox Float DPS Performance
Geometry: Complete for every size
Source: specialized.com
Checked: Oct 22, 2026

Geometry by size

Geometry drawing, size M, to scale.

2018 Specialized Stumpjumper ST Women's Comp Alloy 29 geometry by size
Measurement	S	M	L
Reach(mm)	415	435	455
Stack(mm)	612	612	635
Head tube angle(°)	67.5	67.5	67.5
Seat tube angle(°)	75.8	75.5	75.1
Effective top tube(mm)	570	593	624
Chainstay length(mm)	437	437	437
Wheelbase(mm)	1143	1163	1192
BB drop(mm)	39	39	39
BB height(mm)	333	333	333
Standover(mm)	750	756	769
Seat tube length(mm)	380	410	455
Fork length(mm)	540	540	540
Head tube length(mm)	100	100	125

How to read a geometry chart

Stock build

15 parts

Suspension

Fox FLOAT 34 Rhythm

ForkWheel size 29Front axle / spacing 15x110 (Boost)Offset 51mm

Fox Float DPS Performance

Rear shockEye-to-eye length 190mmStroke 42.5mm

Drivetrain

Shimano SLX

ShifterSpeeds 11

Shimano XT

DerailleurSpeeds 11

Shimano SLX

CassetteSpeeds 12Range 11-46

KMC X-11

ChainSpeeds 11

Race Face Aeffect

CranksetChainring interface CinchSpindle / BB interface CinchCrank length 170mm

Wheels & Tires

Specialized Butcher

TireWheel size 29Width 2.3Bead FoldingTubeless ready 2Bliss ReadyWeight ~1060 g

Specialized Purgatory

TireWheel size 29Width 2.3Tubeless ready 2Bliss Ready

Roval Traverse 29

Rim

Brakes

Shimano SLX

BrakePiston count 4

Cockpit

Specialized Sip Grip

Grips

Seatpost & Saddle

X-Fusion Manic

Dropper post

X-Fusion Manic

SeatpostMaterial AluminumClamp style Two-Bolt

Specialized Myth Sport

Saddle

Keep your Stumpjumper ST Women's Comp Alloy 29 in Quiver

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Quick answers

Which size or configuration labels have geometry for the 2018 Specialized Stumpjumper ST Women's Comp Alloy 29?: Geometry is listed for S, M, and L.
What are the reach and stack of the 2018 Specialized Stumpjumper ST Women's Comp Alloy 29 in size M?: In size M, reach is 435 mm and stack is 612 mm.
What is the head tube angle of the 2018 Specialized Stumpjumper ST Women's Comp Alloy 29?: The head tube angle is 67.5 degrees in every size.
What does the 2018 Specialized Stumpjumper ST Women's Comp Alloy 29 ship with?: The stock build includes Fox FLOAT 34 Rhythm, Shimano SLX, Specialized Butcher, and Shimano SLX.
Which years of the Specialized Stumpjumper ST are on Quiver?: Quiver has the Specialized Stumpjumper ST for 2018, 2020, and 2019.