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Specialized2020

2020 Specialized Stumpjumper ST Comp Alloy 29

Trail

The 2020 Specialized Stumpjumper ST Comp Alloy 29 sits more upright than most trail bikes, with a longer rear center. Reach 415 to 455 mm, stack 612 to 635 mm. The Stumpjumper ST Comp Alloy 29 build comes with Shimano SLX shifting and Specialized Eliminator tires.

Source: specialized.com. Checked .

Key facts

Model year
2020
Type
Trail
Geometry labels
S, M, and L
Drivetrain
Shimano SLX
Geometry
Complete for every size
Source
specialized.com
Checked

Geometry by size

2020 Specialized Stumpjumper ST Comp Alloy 29 geometry drawing, size MSide view of the 2020 Specialized Stumpjumper ST Comp Alloy 29 frame in size M, drawn to scale from its published geometry, with lettered dimension lines.J 1163A 435mmB 612mmJ 1163mmH 437mmK 39mmD 67.5°E 75.5°F 100mmG 410mmN 333mmL 756mmM 540mm
Geometry drawing, size M, to scale.
2020 Specialized Stumpjumper ST Comp Alloy 29 geometry by size
MeasurementSML
Reach(mm)415435455
Stack(mm)612612635
Head tube angle(°)67.567.567.5
Seat tube angle(°)75.875.575.1
Chainstay length(mm)437437437
Wheelbase(mm)114311631192
BB drop(mm)393939
BB height(mm)333333333
Standover(mm)750756769
Seat tube length(mm)380410455
Fork length(mm)540540540
Head tube length(mm)100100125

Stock build

12 parts

Suspension

Fox Float DPS Performance
Rear shock

Drivetrain

DerailleurMaximum cog 51 tFrom the manufacturer: Mount type standardFrom the manufacturer: Cassette compatibility ShimanoFrom the manufacturer: Clutch yesFrom the manufacturer: Weight 310 g
Cassette
ChainSpeeds 11From the manufacturer: Links 118

Wheels & Tires

TireFrom the manufacturer: Bead FoldingFrom the manufacturer: Tubeless ready 2Bliss Ready
TireFrom the manufacturer: Tubeless ready 2Bliss Ready

Brakes

Cockpit

Seatpost & Saddle

SeatpostFrom the manufacturer: Material AluminumFrom the manufacturer: Clamp style Two-Bolt

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Quick answers

Which size or configuration labels have geometry for the 2020 Specialized Stumpjumper ST Comp Alloy 29?
Geometry is listed for S, M, and L.
What are the reach and stack of the 2020 Specialized Stumpjumper ST 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 2020 Specialized Stumpjumper ST Comp Alloy 29?
The head tube angle is 67.5 degrees in every size.
What does the 2020 Specialized Stumpjumper ST Comp Alloy 29 ship with?
The stock build includes Fox FLOAT Rhythm, Shimano SLX, Specialized Eliminator, and Shimano MT501.
Which years of the Specialized Stumpjumper ST are on Quiver?
Quiver has the Specialized Stumpjumper ST for 2020, 2019, and 2018.

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