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It's right for you if...
You've got goals to demolish, and you need a bike that can help you finish a 50-mile ride charity ride, your first sprint triathlon, your daily commute, or any other fitness milestone. You want a performance hybrid that's comfortable on longer rides with big hills and versatile enough to carry groceries home after your workout.
The tech you get
A lightweight aluminum frame, a carbon fork that absorbs road vibration, hydraulic disc brakes for all-weather stopping power, a Shimano Deore 1x11 drivetrain with a wide range of gears for hilly routes, rack and hidden fender mounts, fast-rolling Bontrager tires, IsoZone ergonomic grips, and compatibility with DuoTrap S so you can track your fitness gains.
The final word
If you have fitness goals, FX 4 will help you cruise past them. It's the perfect combination of road bike speed and hybrid bike versatility: comfortable over the long haul, quick when you want to put the hammer down, and reliable in all weather conditions and a variety of road surfaces.
The Walkthrough
favorite_borderWhy you'll love it
- The 1x drivetrain delivers a wide range of gearing with the simplicity of a single shifter
- 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
- 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
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1x drivetrain
A 1x11 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.
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.
Hydraulic disc brakes
Hydraulic disc brakes offer the absolute strongest stopping power in all conditions, including wet and muddy.
Carbon fork
Lightweight fork with carbon fiber legs soaks up hand-numbing road vibration.
Tubeless Ready rims
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.
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
Internal cable routing
We route shift and brake cables through the frame to keep things clean and simple. And it looks great, too.
Rack & fender ready
Built-in mounts make it easy to add racks and fenders for added versatility.
DuoTrap S compatible
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.
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 |
| Hub front | Formula DC-20, alloy, 6-bolt, 5x100mm QR |
|---|---|
| Hub rear | Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR |
| Rim | Bontrager Affinity Disc, Tubeless Ready, 32-hole, 21mm width, presta valve |
| Spokes | 14g stainless steel |
| Tire | Bontrager H2 Comp, wire bead, 30tpi, 700x32c |
| Max tire size | 38c without fenders, 35c with fenders |
| Shifter | Shimano Deore M5100, 11 speed |
|---|---|
| Rear derailleur | Shimano Deore M5100, long cage, Shadow Plus |
| Crank | ProWheel alloy, 42T, 175mm |
| Bottom bracket | Prowheel PW-BB73+, 68/73mm, threaded external |
| Cassette | Shimano Deore M5100, 11-51, 11 speed |
| Pedal | Bontrager City pedals |
| 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 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 Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 110mm length |
|
| Headset | 1-1/8'' threadless, sealed cartridge bearings |
| *Brake |
Size:
S, M, L, XL Shimano hydraulic disc, MT201 lever, UR300 caliper |
|
Size:
S, M, L, XL Shimano MT201 hydraulic disc, flat mount, 160mm rotor |
|
| Brake rotor | Shimano RT26, 6-bolt,160mm |
| Weight | M - 11.52 kg / 25.4 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
Sizing & Tech
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 retailer.
Rider Height
Inseam
XS
147.0 - 155.0 cm
4'9.9" - 5'1.0"
69.0 - 73.0 cm
27.2" - 28.7"
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"
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 |