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2018

FX Sport 5

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$1,789.99 Model 21561
FX Sport 5 is a carbon fiber fitness bike for riders who want the speed of a lightweight road bike with the comfort and control of a flat handlebar. A 400 Series OCLV Carbon frame with an IsoSpeed decoupler to smooth out rough roads, a carbon fork, a Shimano 2x10 drivetrain, and hydraulic disc brakes make it perfect for everything from solo workouts to speedy group rides.
FX Sport 5 is a carbon fiber fitness bike for riders who want the speed of a lightweight road bike with the comfort and control of a flat handlebar. A 400 Series OCLV Carbon frame with an IsoSpeed decoupler to smooth out rough roads, a carbon fork, a Shimano 2x10 drivetrain, and hydraulic disc brakes make it perfect for everything from solo workouts to speedy group rides.
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It's right for you if...

You're ready to log big miles, and you prefer the feel of a flat handlebar to the drop bars that come stock on most road bikes. You prioritize comfort and performance equally, and expect your bike to grow with you as you advance in speed and distance.

The tech you get

A lightweight 400 Series OCLV Carbon frame with a road-smoothing IsoSpeed decoupler, a carbon fork, a 20-speed Shimano Tiagra drivetrain, Tektro hydraulic flat mount disc brakes, hidden fender mounts, a Bontrager Montrose saddle, and a lightweight Bontrager alloy wheelset with front and rear thru-axles for better responsiveness and control.

The final word

A fitness bike that's every bit as fast and capable as the race bikes found in our road lineup. FX Sport 5 has quality parts that will hold up over serious miles, but real value of this model comes in the OCLV Carbon frame: it's light, fast, and it has IsoSpeed—a decoupler at the seat tube/top tube junction that absorbs fatiguing bumps from the road so you can stay stronger longer.

favorite_borderWhy you'll love it

  1. All the performance of an advanced carbon road bike, with the comfort and control that comes from a flat handlebar
  2. On your left, roadie! FX Sport 5 is more than capable of taking on speedy group road rides
  3. You can pair FX with your smartphone and send your ride data to your favorite fitness app when you add DuoTrap S
  4. It's easy to accessorize with fenders, lights, and more!

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Features

Specifications

  • Frameset

    Frame
    FX Sport 400 series OCLV carbon, IsoSpeed, 3s chain keeper, DuoTrap S compatible, flat mount disc, 12mm thru axle, hidden fender mounts
    Fork
    FX carbon, flat mount disc, hidden fender mounts, 12mm thru axle
  • Wheels

    Front hub
    Bontrager alloy sealed bearing, 12mm thru axle
    Rear hub
    Bontrager alloy centerlock, 142x12
    Rims
    Bontrager Tubeless Ready Disc, 28h
    Tires
    Bontrager AW2 Hard-Case Lite, 700x32c, folding
  • Drivetrain

    Shifters
    Shimano Tiagra rapid-fire, 10 speed
    Front derailleur
    Shimano Tiagra
    Rear derailleur
    Shimano Tiagra
    Crank
    Shimano Tiagra, 50/34 (compact)
    Bottom bracket
    Press Fit BB86.5
    Cassette
    Shimano Tiagra, 11-34, 10 speed
    Chain
    KMC X10
    Pedals
    VP nylon body w/alloy cage, toe-clip/strap
  • Components

    Saddle
    Bontrager Montrose Comp
    Seatpost
    Bontrager alloy, 2-bolt head, 27.2mm, 8mm 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 MT-201, hydraulic disc
  • Weight

    Weight
    20˝ - 10.09 kg / 22.25 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 Wheel size 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
14 in XS 700c 35.6 75.0° 11.0 70.0° 53.1 28.5 6.5 43.8 5.0 74.2 104.5 58.4 38.8 53.3
16 in S 700c 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 700c 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 700c 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 700c 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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