Which size or configuration labels have geometry for the 2020 Specialized Stumpjumper Comp Alloy 27.5?

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

What are the reach and stack of the 2020 Specialized Stumpjumper Comp Alloy 27.5 in size L?

In size L, reach is 435 mm and stack is 596 mm.

What is the head tube angle of the 2020 Specialized Stumpjumper Comp Alloy 27.5?

The head tube angle is 65.5 degrees in size L.

What does the 2020 Specialized Stumpjumper Comp Alloy 27.5 ship with?

The stock build includes Fox FLOAT Rhythm, SRAM NX Eagle, Specialized Butcher, and Specialized Sip Grip.

Which years of the Specialized Stumpjumper are on Quiver?

Quiver has the Specialized Stumpjumper for 2020, 2024, 2023, 2022, 2021, 2019, 2018, 2016, 2015, 2014, 2012, 2011, 2010, 2009, 2008, 2007, and 2006.

2020 Specialized Stumpjumper Comp Alloy 27.5 geometry and specs

Key facts

Brand: Specialized
Model: Stumpjumper
Model year: 2020
Frame: Comp Alloy 27.5
Type: Trail
Geometry labels: S, M, L, and XL
Drivetrain: SRAM NX Eagle
Fork: Fox FLOAT Rhythm
Rear shock: Fox Float DPS Performance
Geometry: Complete for every size
Source: specialized.com
Checked: Sep 5, 2026

Geometry by size

Geometry drawing, size M, to scale.

2020 Specialized Stumpjumper Comp Alloy 27.5 geometry by size
Measurement	S	M	L	XL
Reach(mm)	405	415	435	455
Stack(mm)	581	592	596	623
Head tube angle(°)	66.5	65.5	65.5	65.5
Seat tube angle(°)	76.5	75.3	75	74.6
Chainstay length(mm)	432	432	432	432
Wheelbase(mm)	1127	1157	1179	1212
BB drop(mm)	28	21	21	21
BB height(mm)	325	336	336	336
Standover(mm)	742	752	757	769
Seat tube length(mm)	380	380	410	455
Fork length(mm)	522	542	542	542
Head tube length(mm)	100	105	110	140

How to read a geometry chart

Stock build

14 parts

Suspension

Fox FLOAT Rhythm

Fork

Fox Float DPS Performance

Rear shock

Drivetrain

Shifter

Derailleur

Cassette

Chain

Crankset

Bottom bracket

Wheels & Tires

Specialized Butcher

TireBead FoldingTubeless ready 2Bliss ReadyWeight ~1060 g

Specialized Eliminator

TireBead FoldingTubeless ready 2Bliss Ready

Roval Traverse 27.5

Rim

Cockpit

Specialized Sip Grip

Grips

Seatpost & Saddle

X-Fusion Manic

SeatpostMaterial AluminumClamp style Two-Bolt

Specialized Phenom

Saddle

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Quick answers

Which size or configuration labels have geometry for the 2020 Specialized Stumpjumper Comp Alloy 27.5?: Geometry is listed for S, M, L, and XL.
What are the reach and stack of the 2020 Specialized Stumpjumper Comp Alloy 27.5 in size L?: In size L, reach is 435 mm and stack is 596 mm.
What is the head tube angle of the 2020 Specialized Stumpjumper Comp Alloy 27.5?: The head tube angle is 65.5 degrees in size L.
What does the 2020 Specialized Stumpjumper Comp Alloy 27.5 ship with?: The stock build includes Fox FLOAT Rhythm, SRAM NX Eagle, Specialized Butcher, and Specialized Sip Grip.
Which years of the Specialized Stumpjumper are on Quiver?: Quiver has the Specialized Stumpjumper for 2020, 2024, 2023, 2022, 2021, 2019, 2018, 2016, 2015, 2014, 2012, 2011, 2010, 2009, 2008, 2007, and 2006.