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It's right for you if...
You're a commuter or fitness rider who’s having fun spending more time in the saddle. You want a great-looking bike that's versatile, comfortable, and built with quality parts that will perform on longer rides.
The tech you get
A lightweight aluminum frame, a carbon fork, hydraulic disc brakes for all-weather stopping power, a wide-range 18-speed Shimano drivetrain that's great for conquering hills, a vibration-absorbing handlebar and ergonomic grips, extra mounts for accessories like a rack and fenders, and puncture-resistant tires.
The final word
FX 3 Disc is a lightweight and fast fitness bike, commuter, and neighborhood cruiser all in one. For all the great things about this bike, the best tech upgrade is the 2x9 drivetrain. This 18-speed setup is like what you'd see on a road bike: light, efficient, and built for speed.
The Walkthrough
favorite_borderWhy you'll love it
- More confident braking means bad weather doesn't have to keep you from enjoying your ride
- 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 pick up groceries
- The cables are routed internally, which protects them from the elements and adds to the bike's sleek look
- It's easy to accessorize with racks, a kickstand, fenders, lights, and more!
- You can pair FX with your smartphone and send your ride data to your favorite fitness app when you add DuoTrap S
How to: Pump your tires
Setting your bike's tire pressure correctly will give you a more comfortable ride with better grip and handling. Even better, it can help prevent flats
Watch the video
How to: Fix a flat tire
Flat? Fixed. Our simple how-to video will show you how to get back on two wheels in no time flat.
Watch the video
How to: Wash your bike
A clean bike is a happy bike, but washing your ride is a bit more complicated than a quick spray with the hose or a joyride through your local car wash. Follow our step-by-step process and you’ll learn the dos and don’ts of keeping your bike in tip-top shape!
Watch the video
How to: Remove and install wheels
From transporting on a rack to fixing a flat, sometimes those wheels need to come off your bike. Keep watching to learn how to safely remove and install wheels that use a quick release system.
Watch the videoYou might also like
Features
Puncture-resistant tires
Tough Bontrager Hard-Case tires help keep flats from slowing you down.
Blendr stem
Bontrager stem technology lets you clip your gear directly to the stem for clean looks, maximum user friendliness.
Learn more
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.
Carbon fork
Lightweight fork with carbon fiber legs soaks up hand-numbing road vibration.
Alpha Gold Aluminum frame
Our high-performance lightweight aluminum is continuously cold extruded and butted, and formed into manipulated tube shapes to balance strength and weight saving.
Rack & fender ready
Built-in mounts make it easy to add racks and fenders for added versatility.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | Alpha Gold Aluminum, DuoTrap S compatible, internal cable routing, flat mount disc, rack & fender mounts, 135x5mm QR |
|---|---|
| Fork | FX Carbon, rack and fender mounts, flat mount disc, 405mm axle-to-crown, ThruSkew 5mm QR |
| Front hub | Formula DC-20, alloy, 6-bolt, 5x100mm QR |
|---|---|
| Rear hub | Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR |
| Rim | Bontrager Tubeless Ready Disc, 32-hole, presta valve |
| Spokes | 14g, stainless steel, black |
| Tire | Bontrager H2 Hard-Case Lite, wire bead, 30 tpi, 700x32c |
| *Shifter |
Size:
S, M, L, XL, XXL Shimano Acera M3000, 9 speed |
|---|---|
|
Size:
S, M, L, XL, XXL Shimano Acera SL-M3010, 2 speed |
|
| Front derailleur | Shimano Acera T3000, 34.9mm clamp, top swing, dual pull |
| Rear derailleur | Shimano Acera M3000, Shadow design, long cage |
| *Crank |
Size:
S, M Shimano MT210, 46/30, chainguard, 170mm length |
|
Size:
L, XL, XXL Shimano MT210, 46/30, chainguard, 175mm length |
|
| Cassette | Shimano HG200, 11-36, 9 speed |
| Chain | KMC X9 |
| Pedal | Bontrager Satellite City pedal |
| Saddle | Bontrager H1 |
|---|---|
| Seatpost | Bontrager alloy, 27.2mm, 12mm offset, 330mm length |
| *Handlebar |
Size:
S, M Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600mm width |
|
Size:
L, XL, XXL Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 660mm width |
|
| Grips | Bontrager Satellite IsoZone Plus, lock-on, ergonomic |
| *Stem |
Size:
S Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length |
|
Size:
M, L Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 100mm length |
|
|
Size:
XL, XXL 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 rotor | Shimano RT26, 160mm, 6-bolt |
| Brake pad | Brake Pad Shimano Resin Disc Pad B01S |
| Weight | M - 11.74 kg / 25.88 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
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
Inseam
S
155.0 - 165.0 cm
5'1.0" - 5'5.0"
72.0 - 78.0 cm
28.3" - 30.7"
M
165.0 - 175.0 cm
5'5.0" - 5'8.9"
77.0 - 83.0 cm
30.3" - 32.7"
L
175.0 - 186.0 cm
5'8.9" - 6'1.2"
82.0 - 88.0 cm
32.3" - 34.6"
XL
186.0 - 197.0 cm
6'1.2" - 6'5.6"
87.0 - 93.0 cm
34.3" - 36.6"
2XL
197.0 - 203.0 cm
6'5.6" - 6'7.9"
92.0 - 95.0 cm
36.2" - 37.4"
All measurements provided in cm unless otherwise noted.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S | 700c | 38.1 | 74.5° | 11.5 | 70.5° | 54.2 | 29.6 | 6.5 | 45 | 5.0 | 7.5 | 105.9 | 70.4 | 39.3 | 53.9 |
| M | 700c | 44.5 | 74.0° | 13.0 | 71.5° | 55.7 | 29.6 | 6.5 | 45 | 5.0 | 6.8 | 106.0 | 73.8 | 39.7 | 55.7 |
| L | 700c | 50.8 | 73.5° | 16.0 | 71.5° | 57.1 | 29.6 | 6.5 | 45.0 | 5.0 | 6.8 | 107.0 | 79.9 | 39.8 | 58.6 |
| XL | 700c | 57.2 | 73.0° | 19.0 | 72.5° | 58.7 | 29.6 | 6.5 | 45.0 | 5.0 | 6.2 | 107.0 | 84.8 | 39.8 | 61.8 |
| XXL | 700c | 63.5 | 72.0° | 22.0 | 72.5° | 60.1 | 29.6 | 6.5 | 45.0 | 5.0 | 6.2 | 107.2 | 88.5 | 39.2 | 64.7 |