Which size or configuration labels have geometry for the 2018 Trek Speed Concept?

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

What are the reach and stack of the 2018 Trek Speed Concept in size L?

In size L, reach is 426 mm and stack is 541 mm.

What is the head tube angle of the 2018 Trek Speed Concept?

The head tube angle is 72.5 degrees in size L.

What does the 2018 Trek Speed Concept ship with?

The stock build includes Trek OCLV, Trek SC, Shimano Dura-Ace, and Bontrager Aeolus Comp.

Which years of the Trek Speed Concept are on Quiver?

Quiver has the Trek Speed Concept for 2018, 2027, 2026, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2017, 2016, 2015, 2014, 2013, and 2012.

2018

2018 Trek Speed Concept

Road

The 2018 Trek Speed Concept sits at the aggressive end of the range for a road bike, with a shorter rear center. Reach 390 to 445 mm, stack 492 to 565 mm. The Speed Concept build comes with Shimano Ultegra R8000 shifting and Bontrager Aeolus Comp wheels.

Compare with 1,800+ road bikes

Source: trekbikes.com. Checked Oct 11, 2026.

Key facts

Brand: Trek
Model: Speed Concept
Model year: 2018
Type: Road
Geometry labels: S, M, L, and XL
Drivetrain: Shimano Ultegra R8000
Fork: Trek SC
Wheels: Bontrager Aeolus Comp
Geometry: Complete for every size
Source: trekbikes.com
Checked: Oct 11, 2026

Geometry by size

2018 Trek Speed Concept geometry by size
Measurement	S	M	L	XL
Reach(mm)	390	408	426	445
Stack(mm)	492	517	541	565
Head tube angle(°)	72.2	72.5	72.5	72.5
Effective top tube(mm)	495	518	541	565
Chainstay length(mm)	400	400	400	400
Wheelbase(mm)	961	985	1010	1037
BB drop(mm)	80	80	80	80
Standover(mm)	750	775	799	823
Seat tube length(mm)	503	529	553	578
Head tube length(mm)	65	90	115	140

How to read a geometry chart

Stock build

15 parts

Frame

Trek OCLV

Frame

Suspension

Trek SC

Fork

Drivetrain

Shimano Dura-Ace

ShifterWeight 671 g

Shimano Ultegra R8000

Derailleur

Shimano Ultegra R8000

Cassette

Shimano Ultegra HG701

Chain

Shimano Ultegra R8000

Crankset

Trek BB90

Bottom bracketShell standard BB90

Wheels & Tires

Bontrager Aeolus Comp

Wheelset

Bontrager R2 Hard-Case Lite

Tire

Brakes

Bontrager Limit

Brake

Cockpit

Bontrager Concept KVF

Handlebar

Bontrager Concept

Stem

Seatpost & Saddle

Bontrager Concept

Seatpost

Bontrager Hilo

Saddle

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Quick answers

Which size or configuration labels have geometry for the 2018 Trek Speed Concept?: Geometry is listed for S, M, L, and XL.
What are the reach and stack of the 2018 Trek Speed Concept in size L?: In size L, reach is 426 mm and stack is 541 mm.
What is the head tube angle of the 2018 Trek Speed Concept?: The head tube angle is 72.5 degrees in size L.
What does the 2018 Trek Speed Concept ship with?: The stock build includes Trek OCLV, Trek SC, Shimano Dura-Ace, and Bontrager Aeolus Comp.
Which years of the Trek Speed Concept are on Quiver?: Quiver has the Trek Speed Concept for 2018, 2027, 2026, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2017, 2016, 2015, 2014, 2013, and 2012.