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2017 Trek

FX S 4

A 700c aluminum frame fitness bike with mid-range components and tektro rim brakes.
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Manufacturer Price

$1,099
Weight22.3 lbs  
FrameAluminum
SuspensionRigid
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 10
GroupsetTiagra, R350
BrakesTektro Rim
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

38 mph

FX S 4

35 mph

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Highest gear

(descending)

Reviews
BikeRadar
Trek FX Sport 6 review

Nov 2018 · Ian Osborne

High-class fitness bike with proven road technology and a classy component package. Buy if you want a capable, high-spec yet sensible-handling bike with a flat bar

Highs
  • Comfortable-yet-fun ride, IsoSpeed decoupler, lightweight, Shimano 105

Lows
  • Cost is the biggest one, funky-looking grips, only available in black

Read Review

Geometry
Specs
Build
Frame

FX Alpha Gold Aluminum, DuoTrap S compatible, rack & fender mounts

Fork

Bontrager Nebula, carbon

Bottom Bracket

Sealed cartridge

Headset

VP Slimstak, sealed semi-cartridge bearings

Stem

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

Handlebar

Bontrager Satellite Plus IsoZone, 31.8mm, 15mm rise

Saddle

Bontrager H1

Seatpost

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

TypeRigid

Pedals

Nylon body w/alloy cage, toe clip & strap

Grips

Bontrager Satellite IsoZone Plus, lock-on, ergonomic

Groupset
Rear Derailleur

Shimano RD-R350

Front Derailleur

Shimano Tiagra

Crank

Shimano R460, 48/34

Shifters

Shimano Tiagra, 10 speed

Cassette

Shimano Tiagra, 11-34, 10 speed

Chain

KMC X10

Brakes

Tektro alloy linear-pull brakes, Tektro adjustable-reach alloy levers

TypeTektro Rim

Wheels
Rims

Bontrager Tubeless Ready

Front Hub

Formula TK31 alloy

Rear Hub

Formula TK32 alloy

Tires

Bontrager AW1 Hard-Case Lite, 700x28c

Rider Notes
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First added April 12

Last updated July 21

Not listed for 3,234 days