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  • FX 3 Disc
2018

FX 3 Disc

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$769.99 Model 21572
FX 3 Disc is a versatile hybrid bike with powerful hydraulic disc brakes for stopping power in all weather conditions. It's primed for performance, comfort, and utility with features like a lightweight aluminum frame, a carbon fork, IsoZone gel handlebars and grips, and rack and fender mounts. It's a commuting pro if you want it to be, or the perfect fitness companion on pavement and rail trails. 
FX 3 Disc is a versatile hybrid bike with powerful hydraulic disc brakes for stopping power in all weather conditions. It's primed for performance, comfort, and utility with features like a lightweight aluminum frame, a carbon fork, IsoZone gel handlebars and grips, and rack and fender mounts. It's a commuting pro if you want it to be, or the perfect fitness companion on pavement and rail trails. 
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It's right for you if...

You're a commuter or fitness rider who refuses to let a little foul weather ruin your time in the saddle. You're looking for a versatile, comfortable bike with quality parts that will perform on longer rides—even when you stray from the pavement to rougher surfaces like rail trails.

The tech you get

A lightweight Alpha Gold Aluminum frame and FX carbon fork, Shimano hydraulic disc brakes for all-weather stopping power, a Shimano Acera/Alivio drivetrain with 27 speeds and a wide range of gears for hills, a Bontrager Satellite Plus IsoZone handlebar and ergonomic grips for comfort on long rides and uneven terrain, extra mounts for accessories like a rack and fenders, and puncture-resistant Bontrager H2 Hard-case Lite tires.

The final word

FX 3 Disc is a commuter if you want it to be, a fitness bike when you feel like working out, and a cruiser when you're riding the neighborhood with your family. What really makes this model stand out are the upgraded hydraulic disc brakes, which are smoother than mechanical disc brakes and deliver incredible stopping power in muddy and rainy conditions.

Learn more about FX

favorite_borderWhy you'll love it

  1. Weather? What weather? Hydraulic disc brakes let you stop on a dime and ask for change, even in the rain and mud
  2. Road bike speed and hybrid bike versatility in one performance package
  3. It's versatile and does whatever you want it to do, whether that's riding for fitness, commuting, or cruising to the farmer's market to pick up groceries
  4. It's easy to accessorize with racks, a kickstand, fenders, lights, and more!
  5. You can pair FX with your smartphone and send your ride data to your favorite fitness app when you add DuoTrap S

More options

2018
FX S 5 WSD

FX Sport 5 Women's

$1,789.99 

Upgrades from FX S 4 Women's

  • OCLV 400 FX S frameset with IsoSpeed
  • Shimano Tiagra 10-speed drivetrain
  • Lightweight 28-spoke wheelset
  • Bontrager Ajna 1 WSD saddle
  • Bontrager AW2 Hard-Case Lite folding tires
2018
7.7 FX

FX Sport 5

$1,789.99 

Upgrades from FX S 4

  • OCLV 400 FX S frameset with IsoSpeed
  • Shimano Tiagra 10-speed drivetrain
  • Lightweight 28-spoke wheelset
  • Bontrager Montrose Comp saddle
  • Bontrager AW2 Hard-Case Lite folding tires
2018
7.5 FX

FX Sport 4

$1,149.99 

Upgrades from FX 3

  • Superlight FX S Aluminum fitness frameset with flat mount disc brake
  • 10-speed double road drivetrain
  • Fast-rolling AW1 tires
  • Tektro flat mount hydraulic brakes
2018
7.5 FX WSD

FX Sport 4 Women's

$1,149.99 

Upgrades from FX 3 Women's

  • Superlight FX S Aluminum fitness frameset with flat mount disc brake
  • 10-speed double road drivetrain
  • Fast-rolling AW1 tires
  • Tektro flat mount hydraulic brakes
2018
7.3 FX WSD

FX 3 Women's

$659.99 

Upgrades from FX 2 Women's

  • Acera 9-speed drivetrain
  • HCM Carbon FX fork
  • IsoZone handlebar and grips
  • H1 fitness saddle
  • Bontrager Hard-Case Lite tires
2018
7.3 FX

FX 3

$659.99 

Upgrades from FX 2

  • Shimano Alivio 9-speed drivetrain
  • HCM Carbon FX fork
  • IsoZone handlebar and grips
  • H1 fitness saddle
  • Bontrager Hard-Case Lite tires
2018
7.2 FX

FX 2

$489.99 

Upgrades from FX 1

  • Shimano Acera 8-speed drivetrain
  • Lightweight alloy fork
  • Blendr compatible stem
  • 31.8mm alloy handlebar


Features

Rack & fender ready

Built-in mounts make it easy to add racks and fenders for added versatility.

DuoTrap S compatible

DuoTrap S integrates a Bluetooth®/ANT+ sensor into the frame. Log routes and track fitness progress on your computer or smart phone with no external sensor. Works with all major ANT+ wireless players, including Bontrager, Garmin, PowerTap, and SRM.

Blendr stem

Bontrager stem technology lets you clip your gear directly to the stem for clean looks, maximum user friendliness.
Learn more

Puncture-resistant tires

Tough Bontrager Hard-Case tires help keep flats from slowing you down.

Alpha Gold Aluminum frame

Our high-performance lightweight aluminum is continuously cold extruded and butted, and formed into manipulated tube shapes to balance strength and weight saving.

Carbon fork

Lightweight fork with carbon fiber legs soaks up hand-numbing road vibration.

IsoZone handlebar and grips

Suspension for your hands. Our exclusive vibration-damping IsoZone material absorbs road bumps and buzz, giving you more control and an incredibly comfortable ride.

Tubeless Ready rims

Bontrager TLR (Tubeless Ready) Road is the first fully integrated tubeless system for the road. No tubes mean there’s no pinch flats, allowing you to run lower tire pressure. With lower tire pressure you can increase traction, control. and comfort, reduce fatigue on you. Best of all, the tire sealant seals up punctures as soon as they happen!

Hydraulic disc brakes

Hydraulic disc brakes offer the absolute strongest stopping power in all conditions, including wet and muddy.

Specifications

  • Frameset

    Frame
    FX Alpha Gold Aluminum, DuoTrap S compatible, post mount disc, rack & fender mounts
    Fork
    FX carbon, post mount disc, lowrider & fender mounts

  • Wheels

    Front Hub
    Formula alloy, 6-bolt disc, 12mm thru axle, 32h
    Rear Hub
    Formula DC22 alloy
    Rims
    Bontrager Tubeless Ready Disc, 32h
    Tires
    Bontrager H2 Hard-case Lite, 700x32c

  • Drivetrain

    Shifters
    Shimano EF65, 9 speed
    Front derailleur
    Shimano Acera
    Rear derailleur
    Shimano Alivio T4000
    Crank
    Shimano Acera M371, 48/36/26 w/chainguard
    Bottom bracket
    Sealed cartridge
    Cassette
    Shimano HG200, 11-34, 9 speed
    Chain
    KMC X9
    Pedals
    Resin body, alloy cage

  • Components

    Saddle
    Bontrager H1
    Seatpost
    Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset
    Handlebar
    Bontrager Satellite Plus IsoZone, 31.8mm, 15mm rise
    Grips
    Bontrager Satellite IsoZone Plus, lock-on, ergonomic
    Stem
    Bontrager Elite, 31.8mm, 7 degree, w/computer & light mounts
    Headset
    1-1/8˝ threadless, sealed cartridge bearings
    Brakeset
    Shimano M315 hydraulic disc

  • Weight

    Weight
    20˝ - 11.86 kg / 26.15 lbs
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

Sizing & fit

The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.

 

Rider Height

All measurements provided in cm unless otherwise noted.

Frame size number Frame size letter A Seat tube B Seat tube angle C Head tube length D Head angle E Effective top tube F Bottom bracket height G Bottom bracket drop H Chainstay length I Offset J Trail K Wheelbase L Standover M Frame reach N Frame stack
15 in S 38.1 74.5° 11.5 70.5° 54.4 28.5 6.2 44.5 5.0 7.0 105.7 69.3 39.4 54.1
17.5 in M 44.4 74.0° 13.0 70.5° 54.8 28.5 6.2 44.5 5.0 7.0 105.7 73.5 38.9 55.5
20 in L 50.8 73.5° 16.0 71.5° 56.8 28.5 6.2 44.5 4.5 7.0 105.8 78.3 39.4 58.9
22.5 in XL 57.1 73.0° 19.0 72.5° 59.0 28.5 6.2 44.5 4.5 6.2 106.4 83.1 40.0 62.1
25 in XXL 63.5 72.0° 22.0 72.5° 60.3 28.5 6.2 44.5 4.5 6.2 106.5 87.7 39.2 65.0

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