Which size or configuration labels have geometry for the 2021 Trek 520?

Geometry is listed for 48, 51, 54, 57, 60, and 63.

What are the reach and stack of the 2021 Trek 520 in size 57?

In size 57, reach is 383 mm and stack is 587 mm.

What is the head tube angle of the 2021 Trek 520?

The head tube angle is 71.8 degrees in size 57.

What does the 2021 Trek 520 ship with?

The stock build includes Shimano Sora R3000, Bontrager H2 Hard-Case Ultimate, TRP Spyre C 2.0, and Bontrager Comp VR-C.

Which years of the Trek 520 are on Quiver?

Quiver has the Trek 520 for 2021, 2023, 2022, 2020, 2019, 2016, 2015, 2014, 2013, 2012, 2011, 2005, 2004, 1998, 1996, 1995, 1992, and 1990.

2021

2021 Trek 520

Road

The 2021 Trek 520 sits more upright than most road bikes, with a slacker head angle and a longer rear center. Reach 368 to 400 mm, stack 540 to 655 mm. The 520 build comes with Shimano Sora R3030 shifting and Bontrager H2 Hard-Case Ultimate tires.

Compare with 1,800+ road bikes

Source: trekbikes.com. Checked Oct 22, 2026.

Key facts

Brand: Trek
Model: 520
Model year: 2021
Type: Road
Geometry labels: 48, 51, 54, 57, 60, and 63
Drivetrain: Shimano Sora R3030
Geometry: Complete for every size
Source: trekbikes.com
Checked: Oct 22, 2026

Geometry by size

2021 Trek 520 geometry by size
Measurement	48	51	54	57	60	63
Reach(mm)	368	373	378	383	392	400
Stack(mm)	540	551	565	587	625	655
Head tube angle(°)	69.5	70.0	71.0	71.8	71.8	72.3
Effective top tube(mm)	520	531	543	557	583	603
Chainstay length(mm)	450	450	450	450	450	450
Wheelbase(mm)	1041	1045	1048	1052	1074	1086
BB drop(mm)	75	75	70	70	70	70
BB height(mm)	274	274	278	278	278	278
Standover(mm)	713	741	768	794	826	854
Seat tube length(mm)	440	482	512	543	575	605
Head tube length(mm)	115	125	140	160	200	230

How to read a geometry chart

Stock build

12 parts

Drivetrain

Shimano Sora R3000

Shifter

Shimano Sora R3030

Derailleur

Shimano Deore M4000

Derailleur

Shimano HG200

Cassette

KMC X9

ChainLinks 114

Shimano Alivio T4060

Crankset

Wheels & Tires

Bontrager H2 Hard-Case Ultimate

Tire

Shimano M475

Hub

Bontrager Affinity

Rim

Brakes

TRP Spyre C 2.0

Brake

Cockpit

Bontrager Comp VR-C

HandlebarMaterial Aluminum

Seatpost & Saddle

Bontrager Evoke

Saddle

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Manufacturer

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Quick answers

Which size or configuration labels have geometry for the 2021 Trek 520?: Geometry is listed for 48, 51, 54, 57, 60, and 63.
What are the reach and stack of the 2021 Trek 520 in size 57?: In size 57, reach is 383 mm and stack is 587 mm.
What is the head tube angle of the 2021 Trek 520?: The head tube angle is 71.8 degrees in size 57.
What does the 2021 Trek 520 ship with?: The stock build includes Shimano Sora R3000, Bontrager H2 Hard-Case Ultimate, TRP Spyre C 2.0, and Bontrager Comp VR-C.
Which years of the Trek 520 are on Quiver?: Quiver has the Trek 520 for 2021, 2023, 2022, 2020, 2019, 2016, 2015, 2014, 2013, 2012, 2011, 2005, 2004, 1998, 1996, 1995, 1992, and 1990.