2018 · Trek520 Disc

A steel frame gravel bike with upper mid-range components and mechanical disc brakes.

2018 Trek 520 Disc
MSRP$1,359
Weight28.8 lbs
SuspensionRigid
FrameSteel
ForkSteel
Wheels700c Aluminum
Drivetrain3 × 9
GroupsetDeore, Alivio
BrakesMechanical Disc
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Insights
Gearing

3 × 9 — 27 speed

520 Disc

38 mph

Similar Bikes

36 mph

The 520 Disc is easier to ride up hills than similar bikes.

Similar bikes won‘t keep up with the 520 Disc while riding downhill or sprinting.

Reviews
BikeRadar
Trek 520 Disc first ride review

Simon WithersAug 2018

Most notably for 2019 the 520 has gained a 15kg-capacity Bontrager front rack and a much lower bottom gear — the all-important one — compared with the 2018 model.

Read Review

Geometry
Specs
Build
Frame

Trek butted chromoly disc touring, rack & fender mounts

Fork

Chromoly touring disc w/lowrider mounts

Bottom Bracket

Shimano, external cartridge bearing

Headset

1-1/8˝ threadless, sealed cartridge bearings

Stem

Bontrager Elite, 31.8mm, 7 degree, w/computer & light mounts

Handlebar

Bontrager Race VR-C, 31.8mm

Saddle

Bontrager Evoke 1

Seatpost

Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset

Pedals

Wellgo nylon body w/alloy cage, toe-clip/strap

Grips

Bontrager gel cork tape

Groupset
Rear Derailleur

Shimano Deore

Front Derailleur

Shimano Alivio

Crank

Shimano Trekking M591 48/36/26 w/chainguard

Shifters

Shimano Dura-Ace, bar-end type, 9 speed

Cassette

Shimano HG50, 11-32, 9 speed

Chain

KMC X9

Brakes

Hayes CX Expert mechanical disc, Tektro alloy levers

Wheels
Rims

Bontrager Tubeless Ready 36-hole

Front Hub

Shimano M475

Rear Hub

Shimano M475

Tires

Bontrager AW1 Hard-Case, 700x32c

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