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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, Shimano 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.
The Walkthrough
favorite_borderWhy you'll love it
- All the performance of an advanced carbon road bike, with the comfort and control that comes from a flat handlebar
- On your left, roadie! This fitness bike is more than capable of taking on speedy group road rides
- You can pair FX with your smartphone and send your ride data to your favorite fitness app when you add DuoTrap S
- It's easy to accessorize with fenders, lights, and more!
Features
Hydraulic disc brakes
Hydraulic disc brakes offer the absolute strongest stopping power in all conditions, including wet and muddy.
IsoSpeed decoupler
At the core of Trek's endurance comfort technology is the IsoSpeed decoupler, the result of an 18-month study of how a racing bike performs over rough roads, and how that performance affects the rider.
Learn more
400 Series OCLV
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.
Learn more
Internal cable routing
We route shift and brake cables through the frame to keep things clean and simple. And it looks great, too.
Carbon fork
Lightweight fork with carbon fibre legs soaks up hand-numbing road vibration.
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.
Puncture-resistant tires
Tough Bontrager Hard-Case tires help keep flats from slowing you down.
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!
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.
Blendr stem
Bontrager stem technology lets you clip your gear directly to the stem for clean looks, maximum user friendliness.
Learn more
Vanishing fender mounts
Discreet mounts accommodate full-coverage fenders for added utility.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | 400 series OCLV carbon, IsoSpeed, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 142x12mm thru axle |
|---|---|
| *Fork |
Size:
S, M, L, XL FX Carbon, threadless alloy steerer, hidden fender mounts, flat mount disc, 405mm axle-to-crown, 100x12mm thru axle |
|
Size:
S, M, L, XL FX Carbon, flat mount disc, hidden fender mounts, 405mm axle-to-crown, 100x12mm thru axle |
| Front Hub | Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle |
|---|---|
| Rear Hub | Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle |
| Rim | Bontrager Affinity Disc, Tubeless Ready, 28-hole, presta valve |
| Spokes | 14g, stainless steel, black |
| Tire | Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32c |
| Shifter | Shimano Tiagra 4700, 10 speed |
|---|---|
| Front Derailleur | Shimano Tiagra 4700, braze-on |
| Rear Derailleur | Shimano Tiagra 4700, long cage, 34T max cog |
| *Crank |
Size:
S Shimano Tiagra 4700, 50/34, 170mm length |
|
Size:
M, L Shimano Tiagra 4700, 50/34, 172.5mm length |
|
|
Size:
XL Shimano Tiagra 4700, 50/34, 175mm length |
|
| Bottom Bracket | Shimano BB71, 86.5mm, PressFit |
| Cassette | Shimano Tiagra HG500, 11-34, 10 speed |
| Chain | KMC X10 |
| Pedal | VP Resin body, alloy cage, toe clip |
| Saddle | Bontrager Montrose Comp, steel rails, 138mm width |
|---|---|
| Seatpost | Bontrager Approved, alloy, 27.2mm, 8mm offset, 330mm length |
| *Handlebar |
Size:
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:
S, M Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 100mm length |
|
Size:
L, XL Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 110mm length |
|
| Headset | 1-1/8'' threadless, sealed cartridge bearings |
| Brake | Shimano MT201 hydraulic disc, flat mount, 160mm rotor |
| Brake Pad | Brake Pad Shimano Resin Disc Pad B01S |
Weight
- Weight
- 10.35 kg / 22.82 lbs
- Weight limit
- This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
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 authorized Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.
Rider Height
Inseam
XS
147.0 - 156.0 cm
4'9.9" - 5'1.4"
69.0 - 73.0 cm
27.2" - 28.7"
S
154.0 - 167.0 cm
5'0.6" - 5'5.7"
72.0 - 78.0 cm
28.3" - 30.7"
M
164.0 - 177.0 cm
5'4.6" - 5'9.7"
77.0 - 83.0 cm
30.3" - 32.7"
L
174.0 - 187.0 cm
5'8.5" - 6'1.6"
82.0 - 88.0 cm
32.3" - 34.6"
XL
185.0 - 197.0 cm
6'0.8" - 6'5.6"
87.0 - 93.0 cm
34.3" - 36.6"
All measurements provided in cm unless otherwise stated.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | 700c | 50.8 | 73.5° | 18.5 | 71.5° | 59.0 | 28.5 | 6.5 | 43.8 | 4.5 | 6.7 | 107.2 | 78.1 | 40.9 | 61.1 |
| M | 700c | 45.7 | 74.0° | 16.0 | 71.0° | 57.0 | 28.5 | 6.5 | 43.8 | 5.0 | 7.0 | 106.7 | 74.3 | 40.3 | 58.4 |
| S | 700c | 40.6 | 74.5° | 13.5 | 70.5° | 55.0 | 28.5 | 6.5 | 43.8 | 5.0 | 7.1 | 105.6 | 71.2 | 39.5 | 55.8 |
| XL | 700c | 55.9 | 72.5° | 21.0 | 72.5° | 62.0 | 28.5 | 6.5 | 43.8 | 4.5 | 6.3 | 108.0 | 81.8 | 41.9 | 64.0 |
| XS | 700c | 35.6 | 75.0° | 11.0 | 70.0° | 53.1 | 28.5 | 6.5 | 43.8 | 5.0 | 7.4 | 104.5 | 68.4 | 38.8 | 53.3 |