Trek FX Sport 4 2025 - Hybrid Sports Bike
Trek FX Sport 4 is a fitness hybrid offering carbon speed with flat bar control. Ideal for long rides, solo training or lively group outings, it's a bike that keeps pace without sacrificing comfort.
Key Features
- Lightweight 400 Series OCLV Carbon frame with DuoTrap S compatibility
- Carbon fork with hidden mudguard mounts for sleek versatility
- Shimano CUES 10-speed drivetrain for simplified, wide-range gearing
- Shimano MT201 hydraulic disc brakes for all-weather control
- 700c Bontrager Paradigm wheels with 40mm GR1 Expert gravel tyres
- Vibration-absorbing IsoZone handlebars and ergonomic grips
- Easy accessory compatibility for lights, mudguards and racks
- Available with 0% APR finance
If you’re chasing serious speed but prefer the confident, upright feel of a flat handlebar, the Trek FX Sport 4 could be your perfect training partner. Built around a lightweight 400 Series OCLV Carbon frame, it’s engineered to be fast, comfortable, and ready for big mileage days. Internal cable routing keeps the sleek lines uninterrupted, and there’s even DuoTrap S compatibility if you want to seamlessly integrate ride data tracking.
The carbon fork isn’t just for looks – it’s designed with hidden mudguard mounts and flat mount disc compatibility, offering smoother handling and the option to customise for wetter rides or commuting. Paired with the frame’s endurance-optimised geometry, the FX Sport 4 keeps you efficient and fresh mile after mile.
The simple 1x drivetrain setup – Shimano CUES 10-speed with a wide 11-48T cassette – takes the hassle out of shifting while still giving you the range you need for everything from quick sprints to hill repeats. Smooth Shimano hydraulic disc brakes deliver reliable stopping power whatever the weather throws at you, inspiring confidence whether you're hammering through a training session or just out enjoying the ride.
Rolling on lightweight Bontrager Paradigm tubeless-ready wheels and wide 700x40c Bontrager GR1 Expert tyres, this bike offers superb traction and comfort across mixed surfaces. It’s finished with ergonomic touches like IsoZone vibration-absorbing handlebars and comfort grips, adding that extra bit of luxury to long days in the saddle.
Whether you're upgrading your fitness goals, tackling your first sportive or just want a fast, versatile ride that won't tie you to tarmac, the Trek FX Sport 4 is ready to roll.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, mudguard mounts, flat mount disc, 135x5 mm ThruSkew |
| Fork | Carbon, hidden mudguard mounts, flat mount disc, 100x5 mm thru-skew |
| Stem | Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length |
| Bars | Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 660 mm width |
| Front Brake | Shimano hydraulic disc, MT201 lever, UR300 calliper // Shimano hydraulic disc, MT201 lever, UR300 calliper |
| Rear Brake | Shimano hydraulic disc, MT201 lever, UR300 calliper // Shimano hydraulic disc, MT201 lever, UR300 calliper |
| Rear Mech | Shimano CUES U6000 GS |
| Shifters | Shimano CUES U6000 w/optical gear display, 10 speed |
| Speed | 10 |
| Rims | Bontrager Paradigm, Tubeless Ready, 32-hole, 21 mm width, Presta valve |
| Front Hub | Formula CL-51 alloy, 100x5 mm QR |
| Rear Hub | Formula CL-52 alloy, 135x5 mm QR |
| Front Tyre | Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40 mm |
| Rear Tyre | Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40 mm |
| Seat Post | Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length |
| Saddle | Bontrager H1 |
| Chainset | Prowheel alloy, 42T narrow-wide ring, 175 mm length |
| Chain | Shimano LG500, 9/10/11-speed |
| Cassette | Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed |
| Pedals | Bontrager City pedals |
Trek FX+ Size Chart
|
Size |
Height cm |
Height Feet / Inches |
Inseam cm |
Inseam Inches |
|
XS |
147 – 155 cm |
4’10” – 5’1” |
69 – 73 cm |
27” – 29” |
|
S |
155 - 165 cm |
5'1" - 5'5" |
72 - 78 cm |
28" - 31" |
|
M |
165 - 175 cm |
5'5" - 5'9" |
77 - 83 cm |
30" - 33" |
|
L |
175 - 186 cm |
5'9" - 6'1" |
82 - 88 cm |
32" - 35" |
|
XL |
186 - 197 cm |
6'1" - 6'6" |
87 - 93 cm |
34" - 37" |
|
XL |
197 – 203 cm |
6’6” – 6’8” |
92 – 95 cm |
36” – 37” |
What size frame do I need if I am between sizes? - read here
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Trek FX Sport 4 2025 - Hybrid Sports Bike
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