FX Sport 4

Manufacturer Trek

FX Sport 4 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. The 1x drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides.

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 want the simplicity a 1x drivetrain provides.

The tech you get

A lightweight 400 Series OCLV Carbon frame and fork, a Shimano Deore 1x drivetrain with a wide-range cassette, Shimano hydraulic disc brakes for all-weather stopping power, a lightweight tubeless ready wheelset, wide, fast-rolling Bontrager GR1 Expert gravel tires, and a vibration-absorbing handlebar and ergonomic grips.

The final word

Fast, capable, comfortable. This bike has a road -smoothing carbon frame and quality parts that will hold up over serious miles, including the simpler-shifting 1x drivetrain.

Reviews From A Fellow Cyclist

Love This FX Sport 4 Bike!

Finally found a bike that meets my needs!!! I wanted a lightweight bike that has the performance of a road bike, but with the control and comfort of flat handlebars. Bought the bike in late April, and so far have logged 115 miles on it, mostly on the rural, hilly roads of southwestern Wisconsin. I do group road rides and this bike enables me to pedal up the hills with ease, thanks to the numerous "granny" gears. I am 5'4" so I got the Small frame. Fits me well and it's a comfortable ride. Thank you, Trek, for making a great bike!
- Cathy C, Madison, WI

Features

Customize your bike with fenders, racks, bottle cages, and more to make it your own.

A 1x drivetrain means more versatility, simpler shifting and less things to go wrong. You still have a wide range of gears, but with lighter and more intuitive shifting. Everything you need and nothing more.

The all-new FX Sport has slightly less reach and slightly more stack than previous models for a more comfortable yet active and fast riding position.

Ultra high performance, within reach. The areal weight range and modulus mix of 400 Series OCLV provides an exhilarating sense of acceleration and confident handling.