Which size or configuration labels have geometry for the 2017 Trek Session DH 27.5?

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

What are the reach and stack of the 2017 Trek Session DH 27.5 in size L?

In size L, reach is 432 mm and stack is 603 mm.

What is the head tube angle of the 2017 Trek Session DH 27.5?

The head tube angle is 64.2 degrees in every size.

What does the 2017 Trek Session 88 DH 27.5 ship with?

The stock build includes Trek Alpha Platinum, RockShox BoXXer RC, SRAM X0 DH, and DT Swiss FR2150.

Which years of the Trek Session are on Quiver?

Quiver has the Trek Session for 2017, 2027, 2025, 2021, 2020, 2019, 2018, 2016, 2015, 2014, 2013, 2011, 2010, and 2005.

2017 Trek Session DH 27.5 geometry and specs

Key facts

Brand: Trek
Model: Session
Model year: 2017
Frame: DH 27.5
Type: Downhill
Geometry labels: S, M, L, and XL
Drivetrain: SRAM X01
Fork: RockShox BoXXer RC
Wheels: DT Swiss FR2150
Geometry: Complete for every size
Source: trekbikes.com
Checked: Oct 12, 2026

Geometry by size

2017 Trek Session DH 27.5 geometry by size
Measurement	S	M	L	XL
Reach(mm)	389	408	432	456
Stack(mm)	603	603	603	603
Head tube angle(°)	64.2	64.2	64.2	64.2
Effective top tube(mm)	570	590	614	638
Chainstay length(mm)	443	443	443	443
Wheelbase(mm)	1185	1205	1229	1253
BB drop(mm)	9	9	9	9
BB height(mm)	364	364	364	364
Standover(mm)	810	793	790	775
Seat tube length(mm)	426	426	456	456
Head tube length(mm)	115	115	115	115

How to read a geometry chart

Stock build

16 parts

Frame

Trek Alpha Platinum

Frame

Suspension

RockShox BoXXer RC

Fork

Drivetrain

SRAM X0 DH

ShifterSpeeds 7

SRAM X01

DerailleurSpeeds 11Maximum cog 42 tActuation type MechanicalCassette compatibility XDClutch

SRAM GX DH

Cassette

SRAM PC1110

Chain

TruVativ Descendant

CranksetSpindle / BB interface 30mmMaterial Aluminum

Wellgo MG-1

Pedals

Wheels & Tires

DT Swiss FR2150

Wheelset

Bontrager G4 Team Issue

Tire

Brakes

SRAM Code R

Brake

Cockpit

Bontrager Line

HandlebarMaterial Aluminum

Race Face Chester

StemSteerer diameter 1 1/8"Rise 8°Material 2014 Aluminum

FSA Orbit

HeadsetStandard (SHIS) ZS

Seatpost & Saddle

Bontrager Rhythm Elite

Seatpost

Bontrager Evoke 2

Saddle

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Manufacturer

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Quick answers

Which size or configuration labels have geometry for the 2017 Trek Session DH 27.5?: Geometry is listed for S, M, L, and XL.
What are the reach and stack of the 2017 Trek Session DH 27.5 in size L?: In size L, reach is 432 mm and stack is 603 mm.
What is the head tube angle of the 2017 Trek Session DH 27.5?: The head tube angle is 64.2 degrees in every size.
What does the 2017 Trek Session 88 DH 27.5 ship with?: The stock build includes Trek Alpha Platinum, RockShox BoXXer RC, SRAM X0 DH, and DT Swiss FR2150.
Which years of the Trek Session are on Quiver?: Quiver has the Trek Session for 2017, 2027, 2025, 2021, 2020, 2019, 2018, 2016, 2015, 2014, 2013, 2011, 2010, and 2005.