Which size or configuration labels have geometry for the 2020 Trek 1120?

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

What are the reach and stack of the 2020 Trek 1120 in size L?

In size L, reach is 451 mm and stack is 642 mm.

What is the head tube angle of the 2020 Trek 1120?

The head tube angle is 70.3 degrees in size L.

What does the 2020 Trek 1120 ship with?

The stock build includes Trek Alpha Platinum, Trek HCM, Shimano SLX M7000, and Bontrager Chupacabra.

Which years of the Trek 1120 are on Quiver?

Quiver has the Trek 1120 for 2020, 2023, 2022, 2021, 2019, and 2018.

2020

2020 Trek 1120

Reach 396 to 471 mm, stack 634 to 651 mm. The 1120 build comes with Shimano SLX M7000 shifting and Bontrager Chupacabra tires.

Compare geometry

Source: trekbikes.com. Checked Oct 7, 2026.

Key facts

Brand: Trek
Model: 1120
Model year: 2020
Geometry labels: S, M, L, and XL
Drivetrain: Shimano SLX M7000
Fork: Trek HCM
Geometry: Complete for every size
Source: trekbikes.com
Checked: Oct 7, 2026

Geometry by size

2020 Trek 1120 geometry by size
Measurement	S	M	L	XL
Reach(mm)	396	422	451	471
Stack(mm)	634	634	642	651
Head tube angle(°)	70.4	70.4	70.3	70.3
Effective top tube(mm)	560	586	619	643
Chainstay length(mm)	440	440	440	440
Wheelbase(mm)	1082	1108	1142	1166
BB drop(mm)	76	75	75	75
BB height(mm)	314	315	315	315
Standover(mm)	778	791	792	792
Seat tube length(mm)	394	419	470	521
Head tube length(mm)	100	100	110	120

How to read a geometry chart

Stock build

16 parts

Frame

Trek Alpha Platinum

Frame

Suspension

Trek HCM

Fork

Drivetrain

Shimano SLX M7000

Shifter

Shimano SLX M7000

Derailleur

Shimano SLX M7000

Cassette

Shimano HG601

Chain

Race Face Aeffect

CranksetChainring interface CinchSpindle / BB interface Cinch

Trek PF92

Bottom bracket

Trek Not

Pedals

Wheels & Tires

Bontrager Chupacabra

Tire

Bontrager Boost148

Hub

Trek SUNringle Duroc 50 SL

Rim

Brakes

SRAM Level T

Brake

Cockpit

Bontrager Crivitz

Handlebar

Seatpost & Saddle

Bontrager Line 125

Seatpost

Bontrager Montrose

Saddle

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Quick answers

Which size or configuration labels have geometry for the 2020 Trek 1120?: Geometry is listed for S, M, L, and XL.
What are the reach and stack of the 2020 Trek 1120 in size L?: In size L, reach is 451 mm and stack is 642 mm.
What is the head tube angle of the 2020 Trek 1120?: The head tube angle is 70.3 degrees in size L.
What does the 2020 Trek 1120 ship with?: The stock build includes Trek Alpha Platinum, Trek HCM, Shimano SLX M7000, and Bontrager Chupacabra.
Which years of the Trek 1120 are on Quiver?: Quiver has the Trek 1120 for 2020, 2023, 2022, 2021, 2019, and 2018.