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Family Owned
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Trek FX Sport 4 (2021) Lithium Grey
The FX Sport 4 is where performance fitness bikes begin. A lightweight aluminium frame, a wealth of performance features and a 1x11 drive train that simplifies shifting without sacrificing gear range give you the capability to take on longer commutes and
The FX Sport 4 is where performance fitness bikes begin. A lightweight aluminium frame, a wealth of performance features and a 1x11 drive train that simplifies shifting without sacrificing gear range give you the capability to take on longer commutes and faster recreational rides without sacrificing the versatility that has made the FX Trek's best-selling line-up ever.
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 the shopping home after your workout.
The tech you get
A lightweight aluminium frame, a carbon fork that absorbs road vibration, hydraulic disc brakes for all-weather stopping power, a Shimano Deore 1x11 drive train with a wide range of gears for hilly routes, rack and hidden mudguard mounts, fast-rolling Bontrager tyres, IsoZone ergonomic grips and compatibility with DuoTrap S, so you can track your fitness gains.
The final word
If you have fitness goals, the FX Sport 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 on a variety of road surfaces.
Why you'll love it
- The 1x drive train 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 do the weekly shop
- It's easy to accessorise with racks, a kickstand, mudguards, lights and more!
- You can pair FX with your smartphone and send your ride data to your favourite fitness app when you add DuoTrap S
- You can pair FX with your smartphone and send your ride data to your favourite fitness app when you add DuoTrap S
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | Alpha Gold Aluminium, DuoTrap S-compatible, internal cable routing, flat-mount disc, rack and mudguard mounts, 135x5 mm 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, 5x100 mm QR |
|---|---|
| Rear hub | Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm QR |
| Rim | Bontrager Affinity Disc, Tubeless Ready, 32-hole, 21 mm width, presta valve |
| Spokes | 14 g stainless steel, black |
| Tyre | Bontrager H2 Comp, wire bead, 30 tpi, 700x32c |
| Shifter | Shimano Deore M5100, 11-speed |
|---|---|
| Rear derailleur | Shimano Deore M5100, long cage, Shadow Plus |
| Crank | ProWheel alloy, 42T, 175 mm |
| Cassette | Shimano Deore M5100, 11-51, 11-speed |
| Pedal | Bontrager Satellite City pedal |
| Saddle | Bontrager H1 |
|---|---|
| Seatpost | Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length |
| *Handlebar | Size: S, M Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 600 mm width |
| Size: L, XL, XXL Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 660 mm width |
|
| Grips | Bontrager Satellite IsoZone Plus, lock-on, ergonomic |
| *Stem | Size: S Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length |
| Size: M, L Bontrager Elite, 31.8 mm clamp, Blendr-compatible, 7-degree, 100 mm length |
|
| Size: XL, XXL Bontrager Elite, 31.8 mm clamp, Blendr-compatible, 7-degree, 110 mm length |
|
| Head set | 1-1/8" threadless, sealed cartridge bearings |
| Brake | Shimano MT201 hydraulic disc, flat-mount, 160 mm rotor |
| Brake rotor | Shimano RT26, 160 mm, 6-bolt |
| Weight | L - 10.48 kg / 23.11 lb |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
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 authorised 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 - 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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
