2023 Trek FX Sport 4 Hybrid Bike
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The 2023 Trek FX Sport 4 Hybrid Bike is a carbon bike for riders who want the speed of a lightweight road bike with the comfort and control of a flat handlebar. The 1x drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides.
The FX Sport is built around a lightweight 400 Series OCLV Carbon frame with a carbon fork. This not only makes the bike extremely light but also makes it more comfortable as the carbon fibre helps to soak up bumps and vibrations from the road.
The FX Sport 4 comes with a Shimano Deore 1x drivetrain with a wide-range cassette, Shimano hydraulic disc brakes for all-weather stopping power, a lightweight tubeless ready wheel set, wide, fast-rolling Bontrager GR1 Expert gravel tyres and a vibration-absorbing handlebar and ergonomic grips.
This bike is perfect for
Riders who want road bike weight and speed with the comfort of a hybrid bike. With mountain bike gearing and gravel tyres the FX Sport 4 is fast on the road but can also handle light trails.
Key Features
- The 1x drivetrain delivers a wide range of gearing with the simplicity of a single shifter
- You get the superior ride quality of carbon without the bank-breaking price
- On your left, roadie! This fitness bike is more than capable of taking on speedy group road rides
- It's easy to accessorise with mudguards, lights and more!
Why buy a hybrid bike?
Hybrids are the bikes that most people should have. If you want a bike for commuting, going to the shops, getting fit or just for getting around a hybrid is generally the best choice. They combine the speed of a road racing bike with the confident handling of a mountain bike to give you the best of both worlds.
Where are you going to ride?
The first point to think about when picking a hybrid is the kind of surfaces you will be riding on. There are two main flavours of hybrid bike. Some, like the Trek FX, Specialized Sirrus and Cannondale Quick are mainly intended for use on the road. They have bigger gears and skinnier tyres so that they are fast on tarmac. Other bikes like the Trek Dual Sport, Specialized Sirrus X or Cannondale Quick CX are designed to be used on a mixture of surfaces including tracks and gravel paths. They have bigger, grippier tyres and often come with easier gears and some suspension to soak up bumps.
Read our full hybrid bike buying guide
Trek made their first bikes in 1976 in a barn in Wisconsin. Now they’re one of the biggest bike brands in the world. Trek bikes cover everything from professional-level road and mountain bike race bikes to commuters, hybrids and kids bikes. There is a strong heritage of racing at Trek and many Trek bikes have a strong race influence. They take a very scientific approach to researching bike and human performance and then make the fastest and most efficient bikes they can.
It doesn’t stop their attention and passion for cycling flows through everything they do. Since the 1990s, Trek has supported Places for Bikes. Places for Bikes is an advocacy organisation in the USA that gets more people on bikes more often! Places for Bikes ethos falls in line with the companies mission statement to:
Build only products we love. Provide incredible hospitality to our customers, and change the world by getting more people on bikes.
| Frame | Unisex, Carbon, Size 56 |
| Wheel Size | Size 28 |
| Gears | Shimano Deore M5100, long cage, Shadow Plus, 10 Gears |
| Rear Brake | Shimano hydraulic disc, MT201 lever, UR300 calliper // Shimano hydraulic disc, MT201 lever, UR300 calliper Shimano RT10, CenterLock, 160 mm Max brake rotor size, Disc brake with hydraulic actuation |
| Front Brake | Shimano hydraulic disc, MT201 lever, UR300 calliper // Shimano hydraulic disc, MT201 lever, UR300 calliper Shimano RT10, CenterLock, 160 mm Max brake rotor size, Disc brake with hydraulic actuation |
| Tyres | Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40 c |
| Fork | Carbon, hidden mudguard mounts, flat mount disc, 5x100Â mm thru-skew |
| Rear Derailleur | Shimano Deore M5100, long cage, Shadow Plus |
| Crankset | Prowheel alloy, 42T narrow-wide ring, 175 mm length |
| Shifters | Shimano Deore M5100, 11-speed |
| Chain | KMC X11, 11-speed // KMC X11, 11-speed |
| Casette | Shimano Deore M5100, 11-51, 11-speed |
| Handlebar | Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 660 mm width |
| Stem | Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 110 mm length |
| Bartape / Grips | Bontrager Satellite IsoZone Plus, lock-on, ergonomic // |
| Seatpost | Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length |
| Saddle | Bontrager H1 |
| Wheels | Bontrager alloy hubs and Paradigm Comp rims, 28' Wheel Size |
| Front Light | |
| Rear Light | |
| Kickstand |
Please note: Manufacturers can sometimes change the specification of the products from time to time.
| Colours | LITHIUM GREY, TREK WHITE |
| Sizes | L, M, S, XL, XS |
| Brand | Trek |
| Model Year | 2023 |
| Barcodes | 601842668511, 601842668528, 601842668535, 601842668542, 601842668559, 601842668610, 601842668627, 601842668634, 601842668641, 601842668658 |
| SKUs / Part Numbers | 5267835, 5267837, 5267839, 5267841, 5267843, 5267855, 5267857, 5267859, 5267860, 5267861 |
Why buy from Cycles UK?
We Deliver
You can choose how to receive your new bike. You can click and collect from our stores, pick a fast courier delivery or premium hand delivery. Whichever option you choose your bike will be fully assembled and checked by one of our experienced mechanics.
Price Promise
We regularly check our prices against our competitors to ensure that you are getting a good deal. If you find an item cheaper within seven days of purchase, just let us know and ask us to match the price.
Free Insurance
Cycles UK provides 14 days of free insurance on all new bikes sold to UK customers. As part of our service, your new bike is automatically covered with 14 days’ FREE insurance against theft and accidental damage.
Comfort Guarantee
Opinions of contact points such as saddles, shoes and grips can vary a lot between different riders. If you buy a contact point from Cycles UK and you don’t find it comfortable, you can return it within 30 days, and we’ll swap it for something else.
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Trek Hybrid Size Guide
| Size | Small | Medium | Large | Xlarge |
| Rider Height (feet and inches) | 5' 1" to 5' 5" | 5' 5" tp 5' 8.9" | 5' 8.9" to 6' 1.2" | 6' 1.2" to 6' 5.6" |
| Rider Height (CM) | 155 to 165 | 165 to 175 | 175 to 186 | 186 to 197 |
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