Trek 520 Disc

Name: Trek 520 Disc
Brand: Trek

2023 RoadGravel Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 3 × 9 26–48t / 11–36t
Gear range: 604%
Weight: 14.24 kg 31.4 lb · Reference configuration not specified
Frame: Steel
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

48cm 158–164
51cm 161–169
54cm 167–175
57cm 172–186
60cm 183–191
63cm 189–197

Components

17 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

Size: 48, 63, Trek butted chromoly disc touring, rack and mudguard mounts, 135x5 mm QR; Size: 51, 54, 57, 60, butted chromoly disc touring, rack and mudguard mounts, 135x5 mm QR Not identified

Suspension

1 part

Fork

Alloy disc touring, rack mounts, 100x5 mm ThruSkew Not identified

Drivetrain

6 parts

Cassette
- Shimano CS-HG200
CS-HG200
Chain
- KMC X9 9 speeds
Crankset
- Shimano FC-T4060 48/36/26t
FC-T4060
Front derailleur
- Shimano Sora
Rear derailleur
- Shimano RD-M4000
RD-M4000
Shifters
- Shimano Sora SL-R3000
SL-R3000

Brakes

1 part

Brakes
- TRP Spyre

Wheels and tires

5 parts

Front hub
- Shimano HB-M475
HB-M475
Rear hub
- Shimano FH-M475
FH-M475
Rims
- Bontrager
Spokes

14 g stainless steel Not identified
Tires
- Bontrager

Cockpit and contact points

6 parts

Handlebar
- Bontrager
Headset

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

Other components

1 part

Racks
- Bontrager

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 54cm

Table

Reach 378mm

Stack 565mm

Wheelbase 1048mm

Head angle 71.0°

Seat angle 73.8°

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 Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	368	373	378	383	392	400
Stackmm	540	551	565	587	625	655
Top tube lengthmm	520	531	543	557	583	603
Seat tube lengthmm	440	482	512	543	575	605
Head tube lengthmm	115	125	140	160	200	230
Head tube angle	69.5°	70°	71°	71.8°	71.8°	72.3°
Seat tube angle	74.3°	74°	73.8°	73.5°	73°	72.8°
Chainstay lengthmm	450	450	450	450	450	450
Wheelbasemm	1041	1045	1048	1052	1074	1086
Front centermm	602	606	608	611	633	645
Bottom bracket dropmm	75	75	70	70	70	70
Bottom bracket heightmm	274	274	278	278	278	278
Standover heightmm	713	741	768	794	826	854
Fork rakemm	52	52	52	52	52	52
Trailmm	74	71	65	59	59	56
Stack/reach ratio	1.47	1.48	1.50	1.53	1.59	1.64

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: Steel
Fork material: Aluminum
Bicycle weight: 14.24 kg

31.4 lb
Weight limit: 125 kg

275.6 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 26
Largest chainring: 48
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 20.9 in
Highest gear: 126.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire clearance: Maximum tire width: 2″
Tire width: 38c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

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

Lowest gear

20.9 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2023
Sample: 1,655 bicycles with this information
Coverage: 79.1% of the class

Highest gear

126.6 gear inches

This value is above the central range for this class.

Cohort: Road / Gravel Model year: 2023
Sample: 1,655 bicycles with this information
Coverage: 79.1% of the class

Shifting

Mechanical

688 of 2,087 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2023
Sample: 2,087 bicycles with this information
Coverage: 99.8% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.0 km/h
Highest gear: 48.5 km/h

Total gear range 604%

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: 20.9–126.6 gear inches
Class reference (p10–p90): 23.2–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2023
Lowest gear: 1655 bicycles with this information, 79.1% of the class
Highest gear: 1655 bicycles with this information, 79.1% 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 2023 builds
Specification	This bicycle Trek 520 Disc	Trek 520	Trek 520 Grando
Frame
Bicycle weight	14.24 kg	14.24 kg	13.28 kg
Drivetrain
Front chainrings	3	3	2
Smallest chainring	26	26	28
Largest chainring	48	48	42
Rear sprockets	9	9	10
Lowest gear	20.9 in	20.9 in	22.6 in
Highest gear	126.6 in	126.6 in	110.7 in
Other specifications
Tire width	38c	38c	40c