FX Sport 4 - Trek Bikes

Overview

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Path to pavement and beyond — check out all of the compatible accessories you need to ride longer with your FX Sport.

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Time to bust out the repair stand for some maintenance? Find a detailed breakdown of your bike with part numbers, torque values, and platform-specific tech instructions below.

Get it here

Finding time for yourself in the city that never sleeps.

Eight tips for fun, stress-free bike commutes.

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When a D.C. teacher saw what school closures would mean for his students, he turned to bikes. And that changed everything.

How NYC barber Julien Howard uses his bicycle to provide an out-of-the-box experience

Features

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.

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Inspired by rider demand for trouble-free drivetrain longevity and performance, Shimano CUES offers a new foundation for versatility and durability across a range of both electric and standard bikes. CUES features Shimano’s new LINKGLIDE drivetrain technology for significantly increased life on wear items like chain, cassette, and chainrings.

LINKGLIDE technology has been specifically engineered for incredible durability while still delivering smooth and decisive shifting – along with a great pedalling experience. Available exclusively on Shimano CUES drivetrains.

Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.

See the guide

Deck out your FX Sport with our favorite compatible accessories

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Lightweight, full carbon fork soaks up hand-numbing road vibration for a more comfortable ride.

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

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

DuoTrap S (sold separately) 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.

Cables are routed directly into the head tube and through the bike's tubes for a clean look that prevents cables and housing from getting dirty.

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

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40mm wide gravel tires deliver all-terrain performance. If you don't want to use fenders, you can fit tires up to 42mm wide.

Bontrager TLR (Tubeless Ready) Road is the first fully integrated tubeless system for road wheels. When you go tubeless with TLR, you can run lower tire pressure for increased traction and comfort without the threat of pinch flats.

Carry more and stay drier when you add a Bontrager rack and fenders. We recommend Bontrager NCS-1 fenders in size large. For a rack, simply follow Bontrager’s rack sizing guidelines for a perfect fit.

Going for a long ride? Pack all the nutrition and gear you need by adding a Bontrager frame bag using the integrated mounts on the underside of the top tube.

Specs

Frame	400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 135x5mm ThruSkew
Fork	Carbon, hidden fender mounts, flat mount disc, 100x5mm thru-skew

Weight	M - 10.46 kg / 23.07 lbs
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).

Shifter	Shimano CUES U6000 w/optical gear display, 10 speed
Rear derailleur	Shimano CUES U6000 GS
*Crank	Size: XS, S Prowheel alloy, 42T narrow-wide ring, 170mm length
Size: M, L, XL Prowheel alloy, 42T narrow-wide ring, 175mm length
Cassette	Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
Chain	Shimano LG500, 9/10/11 speed
Pedal	Bontrager City pedals

Hub front	Formula CL-51 alloy, 100x5mm QR
Skewer front	135x5mm bolt-on
Hub rear	Formula CL-52 alloy, 135x5mm QR
Skewer rear	169x5mm bolt-on
Rim	Bontrager Paradigm, Tubeless Ready, 32-hole, 21mm width, Presta valve
Spokes	14g stainless steel, black
Tire	Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40mm

Saddle	Bontrager H1
Seatpost	Bontrager alloy, 27.2mm, 12mm offset, 330mm length
*Handlebar	Size: XS, S Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600mm width
Size: M, L, XL Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 660mm width
Grips	Bontrager Satellite IsoZone Plus, lock-on, ergonomic
*Stem	Size: XS Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length
Size: S, M Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length
Size: L, XL Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 110mm length
Brake	Shimano hydraulic disc, MT201 lever, UR300 caliper
Brake rotor	Shimano RT10, centerlock, 160mm

Sizing

How tall are you?

To measure your height, stand straight up, barefoot, with your back, heels, shoulders and head all touching a wall. While looking straight ahead, place a book or straight edge on your head and slowly push it against the wall. Your straight edge should be parallel with the floor. Mark the spot where the bottom of the book is touching the wall. The distance from the marked spot to the floor is your height.

What is your inseam?

How to measure: Stand barefoot with your back straight and against a wall. Tuck a ruler or something that extends to the floor between your legs. Using both hands, and keeping it level, pull the ruler up into your crotch as if you were sitting on the saddle. Measure the distance from the top edge of the ruler to the ground to find your inseam measurement. Your inseam is very important to your final bike size so please measure carefully.

Geometry

Service

Reviews

We’ll make this a great experience

Delivered the way you want

30-day Unconditional Guarantee

More options

FX Sport-compatible accessories

Service manual

Great Ride Series: Andre' Holland

Tips for commuting by bike

Forever prime

The Velo Barber

1x drivetrain

Just-right geometry

400 Series OCLV

Shimano CUES

Shimano LINKGLIDE

Upgrade your pedals and love your bike more

Ride-ready gear

FX carbon fork

Hydraulic disc brakes

IsoZone handlebar and grips

DuoTrap S compatible

Sleek cable integration

Blendr stem

Wide, grippy tires

Tubeless Ready rims

Hidden rack and fender mounts

Frame bag mounts

How tall are you?

What is your inseam?

We’ll make this a great experience

Delivered the way you want

30-day Unconditional Guarantee

More options

FX Sport-compatible accessories

Service manual

Great Ride Series: Andre' Holland

Tips for commuting by bike

Forever prime

The Velo Barber

Product features

1x drivetrain

Just-right geometry

400 Series OCLV

Shimano CUES

Shimano LINKGLIDE

Upgrade your pedals and love your bike more

Ride-ready gear

FX carbon fork

Hydraulic disc brakes

IsoZone handlebar and grips

DuoTrap S compatible

Sleek cable integration

Blendr stem

Wide, grippy tires

Tubeless Ready rims

Hidden rack and fender mounts

Frame bag mounts

How tall are you?

What is your inseam?