Which size or configuration labels have geometry for the 2017 Trek 720 Disc?

Geometry is listed for 49, 52, 54, 56, 58, and 61.

What are the reach and stack of the 2017 Trek 720 Disc in size 56?

In size 56, reach is 390 mm and stack is 582 mm.

What is the head tube angle of the 2017 Trek 720 Disc?

The head tube angle is 72.2 degrees in size 56.

What does the 2017 Trek 720 Disc ship with?

The stock build includes Trek Alpha, Shimano 105, Bontrager centerlock, and TRP HY/RD cable/hydro.

Which years of the Trek 720 Disc are on Quiver?

Quiver has the Trek 720 Disc for 2017, 2016, and 2015.

2017

2017 Trek 720 Disc

Reach 375 to 402 mm, stack 533 to 625 mm. The 720 Disc build comes with Shimano 105 shifting and Bontrager centerlock wheels.

Compare geometry

Source: trekbikes.com. Checked Oct 12, 2026.

Key facts

Brand: Trek
Model: 720 Disc
Model year: 2017
Geometry labels: 49, 52, 54, 56, 58, and 61
Drivetrain: Shimano 105
Wheels: Bontrager centerlock
Geometry: Complete for every size
Source: trekbikes.com
Checked: Oct 12, 2026

Geometry by size

2017 Trek 720 Disc geometry by size
Measurement	49	52	54	56	58	61
Reach(mm)	375	380	385	390	395	402
Stack(mm)	533	549	565	582	600	625
Head tube angle(°)	70.8	71.4	71.8	72.2	72.5	72.8
Effective top tube(mm)	526	538	550	563	575	593
Chainstay length(mm)	426	426	426	426	426	426
Wheelbase(mm)	1002	1007	1014	1021	1029	1041
BB drop(mm)	74	74	72	72	70	70
BB height(mm)	274	274	276	276	278	278
Standover(mm)	733	750	770	786	805	825
Seat tube length(mm)	466	486	506	526	546	566
Head tube length(mm)	96	110	128	145	164	190

How to read a geometry chart

Stock build

12 parts

Frame

Trek Alpha

Frame

Drivetrain

Shimano 105

ShifterSpeeds 11

Shimano 105

DerailleurWeight 138 g

Shimano 105

CassetteSpeeds 11

Shimano 105

Chain

Shimano RS500

Crankset

Wheels & Tires

Bontrager centerlock

Wheelset

Bontrager AW1 Hard-Case Lite

Tire

Bontrager centerlock

Hub

Brakes

TRP HY/RD cable/hydro

Brake

Cockpit

Bontrager Lite IsoZone

Handlebar

Seatpost & Saddle

Bontrager Paradigm 1

Saddle

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Quick answers

Which size or configuration labels have geometry for the 2017 Trek 720 Disc?: Geometry is listed for 49, 52, 54, 56, 58, and 61.
What are the reach and stack of the 2017 Trek 720 Disc in size 56?: In size 56, reach is 390 mm and stack is 582 mm.
What is the head tube angle of the 2017 Trek 720 Disc?: The head tube angle is 72.2 degrees in size 56.
What does the 2017 Trek 720 Disc ship with?: The stock build includes Trek Alpha, Shimano 105, Bontrager centerlock, and TRP HY/RD cable/hydro.
Which years of the Trek 720 Disc are on Quiver?: Quiver has the Trek 720 Disc for 2017, 2016, and 2015.