Trek FX

Name: Trek FX
Brand: Trek

2018 UrbanFitness

Last known price: $359

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 3 × 7 28–48t / 14–34t
Gear range: 416%
Weight: 12.75 kg 28.1 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

15"
17.5"
20"
22.5"

The manufacturer did not publish rider heights for these sizes.

Components

16 of 21 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

FX Alpha Silver Aluminum, DuoTrap S compatible, rack & fender mounts Not identified

Suspension

1 part

Fork

High-tensile steel w/lowrider mounts, CLIX dropouts Not identified

Drivetrain

7 parts

Bottom bracket

Sealed cartridge Not identified
Cassette
- SunRace
Chain
- KMC
Crankset

Forged alloy, 48/38/28 w/chainguard Not identified
Front derailleur
- Shimano Tourney
Rear derailleur
- Shimano Tourney
Shifters
- Shimano ST-EF500
ST-EF500

Brakes

1 part

Brakes
- Tektro

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Grips
- Bontrager
Handlebar
- Bontrager
Headset

1-1/8˝ threadless, sealed semi-cartridge bearings Not identified
Pedals
- Wellgo
Saddle
- Bontrager
Seatpost
- Bontrager
Stem
- Bontrager

Sizes and geometry

4 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 17.5"

Table

Reach 389mm

Stack 555mm

Wheelbase 1056mm

Head angle 70.5°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	394	389	394	400
Stackmm	541	555	589	621
Top tube lengthmm	544	548	568	590
Seat tube lengthmm	381	444	508	571
Head tube lengthmm	115	130	160	190
Head tube angle	70.5°	70.5°	71.5°	72.5°
Seat tube angle	74.5°	74°	73.5°	73°
Chainstay lengthmm	445	445	445	445
Wheelbasemm	1056	1056	1057	1063
Front centermm	619	619	620	626
Bottom bracket dropmm	65	65	65	65
Bottom bracket heightmm	285	285	285	285
Standover heightmm	697	738	786	834
Fork rakemm	50	50	45	45
Trailmm	71	71	70	63
Stack/reach ratio	1.37	1.43	1.50	1.55

Not published by the manufacturer: Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Steel
Bicycle weight: 12.75 kg

28.1 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 28
Largest chainring: 48
Rear sprockets: 7
Smallest sprocket: 14
Largest sprocket: 34
Lowest gear: 23.9 in
Highest gear: 99.4 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 35c
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

2 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

23.9 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2018
Sample: 166 bicycles with this information
Coverage: 87.3% of the class

Highest gear

99.4 gear inches

This value is below the central range for this class.

Cohort: Urban / Fitness Model year: 2018
Sample: 166 bicycles with this information
Coverage: 87.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.1 km/h
Highest gear: 38.1 km/h

Total gear range 416%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 23.9–99.4 gear inches
Class reference (p10–p90): 22.2–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2018
Lowest gear: 166 bicycles with this information, 87.3% of the class
Highest gear: 166 bicycles with this information, 87.3% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2018 builds
Specification	This bicycle Trek FX	Trek FX 1	Trek FX 1 Stagger	Trek FX 2	Trek FX 2 Disc	Trek FX 2 Women's Disc
Frame
Intended fit	Unisex	Unisex	Unisex	Unisex	Unisex	womens
Fork material	Steel	Steel	Steel	Aluminum	Aluminum	Aluminum
Bicycle weight	12.75 kg	12.41 kg	12.34 kg	11.43 kg	12.01 kg	11.79 kg
Drivetrain
Rear sprockets	7	7	7	8	8	8
Smallest sprocket	14	14	14	11	11	11
Largest sprocket	34	34	34	32	32	32
Lowest gear	23.9 in	23.9 in	23.9 in	25.4 in	25.4 in	25.4 in
Highest gear	99.4 in	99.4 in	99.4 in	126.6 in	126.6 in	126.6 in
Brakes
Brake type	Rim brake	Rim brake	Rim brake	Rim brake	Mechanical disc	Mechanical disc

Changes since 2017
Specification	2017 Trek FX	This bicycle Trek FX
Frame
Weight limit	Not informed	136 kg
Other specifications
Travel	Configuration: Rigid	Configuration: RigidFront: Additional specification: Not available: YesRear: Additional specification: Not available: Yes