Trek FX+ 1S Midstep

Name: Trek FX+ 1S Midstep
Brand: Trek

2026 UrbanFitness Electric bicycle Manufacturer page

Last known price: $2,199

Prices shown first for United States
Suspension: Rigid
Wheels: 650b, 700c
Drivetrain: 1 × 8 40t / 11–45t
Gear range: 409%
Battery: 520 Wh
Weight: 22 kg 48.5 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

45cm 155–166
50cm 164–176
55cm 174–186

Components

14 of 22 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

Alpha Gold Aluminum, internal cable routing, internal battery, rack & fender mounts, flat mount disc brake, kickstand mount, 144.5mm OLD hub motor spacing Not identified

Electric system

4 parts

Battery

520Wh, integrated in down tube Not identified
Charger
- Trek
Display

LCD display Not identified
Motor

Hub drive motor, 60 Nm, 500W, 36H, black Not identified

Suspension

1 part

Fork

Alloy, internal brake routing, fender mounts, rack mounts, ThruSkew 5mm bolt-on skewer Not identified

Drivetrain

5 parts

Cassette
- Shimano CS-HG400
CS-HG400
Chain
- KMC Z8.3 8 speeds
Crankset

Alloy, 40T steel chainring, 170mm length Not identified
Rear derailleur
- Shimano Essa RD-U2000 8 speeds
RD-U2000
Shifters
- Shimano Altus SL-M315
SL-M315

Brakes

1 part

Brakes
- BH
BH-286

Wheels and tires

3 parts

Front hub

Alloy low-flange w/6-bolt disc, 36h, w/QR Not identified
Rims

Alloy double wall, 36h Not identified
Tires
- Bontrager

Cockpit and contact points

6 parts

Other components

1 part

Lights
- Herrmans
M-15

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 50cm

Table

Reach 385mm

Stack 620mm

Wheelbase 1095mm

Head angle 70.5°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 650b wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	382	385	393
Stackmm	604	620	650
Top tube lengthmm	569	574	592
Seat tube lengthmm	408	463	507
Head tube lengthmm	155	170	200
Head tube angle	70°	70.5°	71°
Seat tube angle	73.5°	73°	73°
Chainstay lengthmm	468	468	468
Wheelbasemm	1092	1095	1109
Front centermm	633	636	650
Bottom bracket dropmm	70	70	70
Standover heightmm	655	672	693
Fork rakemm	50	49	51
Trailmm	76	73	69
Stack/reach ratio	1.58	1.61	1.65

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

Specifications

Frame and fork

Intended fit: womens
Frame material: Aluminum
Fork material: Aluminum
Bicycle weight: 22 kg

48.5 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 45
Lowest gear: 25.8 in
Highest gear: 105.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 520 Wh

Additional specifications

Battery: 520Wh, integrated in down tube
Tire clearance: Maximum tire width: 50c; Additional specification: Wheel kind: 27.5
Tire width: 50c
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 650b, 700c

Technical analysis

3 measures

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

Lowest gear

25.8 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2026
Sample: 145 bicycles with this information
Coverage: 78.8% of the class

Highest gear

105.5 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2026
Sample: 145 bicycles with this information
Coverage: 78.8% of the class

Shifting

Mechanical

5 of 184 bicycles with this information use electronic shifting.

Cohort: Urban / Fitness Model year: 2026
Sample: 184 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.9 km/h
Highest gear: 40.4 km/h

Total gear range 409%

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: 25.8–105.5 gear inches
Class reference (p10–p90): 22.1–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2026
Lowest gear: 145 bicycles with this information, 78.8% of the class
Highest gear: 145 bicycles with this information, 78.8% 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 2026 builds

Differences across 2026 builds
Specification	This bicycle Trek FX+ 1S Midstep	Trek FX+ 1	Trek FX+ 1 Midstep	Trek FX+ 1S	Trek FX+ 2 LT	Trek FX+ 2 LT Midstep
Frame
Intended fit	womens	Unisex	womens	Unisex	Unisex	womens
Bicycle weight	22 kg	22.1 kg	22 kg	22.1 kg	17.75 kg	17.65 kg
Drivetrain
Smallest chainring	40	40	40	40	42	42
Largest chainring	40	40	40	40	42	42
Largest sprocket	45	45	45	45	40	40
Lowest gear	25.8 in	24.4 in	25.8 in	24.4 in	28.9 in	28.9 in
Highest gear	105.5 in	100.0 in	105.5 in	100.0 in	105.0 in	105.0 in
Electric bicycle systems
Battery capacity	520 Wh	520 Wh	520 Wh	520 Wh	250 Wh	250 Wh
Other specifications
Tire clearance	Maximum tire width: 50c; Additional specification: Wheel kind: 27.5	Maximum tire width: 50c; Additional specification: Wheel kind: 27.5	Maximum tire width: 50c; Additional specification: Wheel kind: 27.5	Maximum tire width: 50c; Additional specification: Wheel kind: 27.5	Maximum tire width: 50c	Maximum tire width: 50c
Tire width	50c	50c	50c	50c	40c	40c
Wheel size	650b / 700c	650b	650b / 700c	650b	650b	650b
Bottom bracket standard	Not informed	Not informed	Not informed	Not informed	BSA	BSA