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2018

FX Sport 4

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£950.00 Model 21559
FX Sport 4 is where performance fitness bikes begin. A lightweight frame, 20-speed drivetrain, and a wealth of performance features give this fitness bike the capability to take on longer commutes and faster recreational rides without sacrificing the versatility that has made FX Trek's best-selling line-up ever.
FX Sport 4 is where performance fitness bikes begin. A lightweight frame, 20-speed drivetrain, and a wealth of performance features give this fitness bike the capability to take on longer commutes and faster recreational rides without sacrificing the versatility that has made FX Trek's best-selling line-up ever.
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It's right for you if...

You've got goals to demolish, and you need a bike that can help you finish a 50-mile ride charity ride, your first sprint triathlon, your daily commute or any other fitness milestone. You want a performance hybrid that's comfortable on longer rides with big hills and versatile enough to carry groceries home after your workout.

The tech you get

A lightweight 200 Series Alpha Aluminium frame, a carbon fork that absorbs road vibration, Tektro hydraulic disc brakes for all-weather stopping power, a 20-speed Shimano Tiagra drivetrain with a wide range of gears for hilly routes, rack and hidden mudguard mounts, fast-rolling Bontrager AW1 tyres, IsoZone ergonomic grips and compatibility with DuoTrap S so you can track your fitness gains.

The final word

If you have fitness goals, FX Sport 4 will help you cruise past them. It's the perfect combination of road bike speed and hybrid bike versatility: comfortable over the long haul, quick when you want to put the hammer down and reliable in all weather conditions and on a variety of road surfaces.

favorite_borderWhy you'll love it

  1. FX Sport 4 is a bike that inspires you to ride further and faster, and demolish the fitness goals you've set for yourself
  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 do the weekly shop
  4. It's easy to accessorise with racks, a kickstand, mudguards, lights and more!
  5. You can pair FX with your smartphone and send your ride data to your favourite fitness app when you add DuoTrap S

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Features

Specifications

  • Frameset

    Frame
    200 Series Alpha Aluminium, DuoTrap S compatible, rack and mudguard mounts
    Fork
    FX carbon, flat mount disc, hidden mudguard mounts
  • Wheels

    Front hub
    Formula alloy, CenterLock disc, 12 mm thru-axle, 32h
    Rear hub
    Formula alloy, CenterLock disc, QR, 32h
    Rims
    Bontrager Tubeless Ready Disc, 32h
    Tyres
    Bontrager AW1 Hard-Case Lite, 700x32c
  • Drivetrain

    Shifters
    Shimano Tiagra rapid-fire, 10 speed
    Front derailleur
    Shimano Tiagra
    Rear derailleur
    Shimano RD-4700 Tiagra
    Crank
    Shimano R460, 48/34
    Bottom bracket
    Sealed cartridge, external cup
    Cassette
    Shimano Tiagra, 11-34, 10-speed
    Chain
    KMC X10
    Pedals
    Resin body, alloy cage
  • Components

    Saddle
    Bontrager H1
    Seatpost
    Bontrager SSR, 2-bolt head, 27.2 mm, 12 mm offset
    Handlebar
    Bontrager Satellite Plus IsoZone, 31.8 mm, 15 mm rise
    Grips
    Bontrager Satellite IsoZone Plus, lock-on, ergonomic
    Stem
    Bontrager Elite, 31.8 mm, 7-degree, w/computer and light mounts
    Head set
    1-1/8˝ threadless, sealed cartridge bearings
    Brake set
    Shimano MT-201, hydraulic disc
  • Weight

    Weight
    20˝ - 10.38 kg/22.88 lb
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
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 on Trek pre-production painted frames at the time of publication. Weights may vary in final production

Sizing & fit

Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.

 

Rider Height

All measurements provided in cm unless otherwise stated.

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
16 in S 40.6 74.5° 13.5 70.5° 55.0 28.5 6.5 43.8 5.0 70.9 105.6 71.2 39.5 55.8
18 in M 45.7 74.0° 16.0 71.0° 57.0 28.5 6.5 43.8 5.0 67.6 106.7 74.3 40.3 58.4
20 in L 50.8 73.5° 18.5 71.5° 59.0 28.5 6.5 43.8 4.5 69.7 107.2 78.1 40.9 61.1
22 in XL 55.9 72.5° 21.0 72.5° 62.0 28.5 6.5 43.8 4.5 63.2 108.0 81.8 41.9 64.0

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