The FX 3 is a versatile hybrid bike that's primed for performance, comfort and utility. It has fea...The FX 3 is a versatile hybrid bike that's primed for performance, comfort and utility. It has features like a lightweight aluminium frame, a carbon fork, a 1x drivetrain and powerful disc brakes that stop in any weather. It's a commuting pro if you want it to be, or the perfect fitness companion on road and rail trails. Specifications Frameset Frame: Alpha Gold Aluminium, internal cable routing, rack & mudguard mounts, post mount disc, kickstand mount, 135x5 mm QR Fork: FX carbon, flat-mount disc, rack mounts, 410mm axle-to-crown, Thru Skew 5mm QR Wheels Rims: Bontrager Tubeless Ready Disc, 32-hole, Presta valve Tyres: Bontrager H2 Comp, wire bead, 30 tpi, 700x35 mm Drivetrain Crankset: Prowheel alloy, 40T narrow-wide ring, 170 mm length Shifters: Shimano CUES U6000 w/optical gear display, 10-speed Rear Derailleur: Shimano CUES U6000 GS Chain: Shimano LG500 Cassette: Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed Components Handlebar: Bontrager Comp Lowriser, alloy, 31. 8 mm, 15 mm rise, 600 mm width Stem: Bontrager Comp, 31. 8 mm, Blendr compatible, 7-degree Grips: Trek Line Ergonomic Pro, lock-on Brakes: Shimano hydraulic disc, MT201 lever, UR300 calliper Saddle: Bontrager H1 Seatpost: Bontrager alloy, 27. 2 mm, 12 mm offset Pedals: Bontrager City pedals Trek FX Sizing SMLXLRider Height (cm) 155 - 165165 - 175175 - 186186 - 197Inside Leg (cm) 72 - 7877 - 8382 - 8887 - 93 The FX 3 is a versatile hybrid bike built for speed, comfort and everyday practicality. It pairs a lightweight aluminium frame with a road-smoothing carbon fork and a simple 1x drivetrain for dependable performance wherever you ride. Whether you're commuting to work, cruising rail trails or getting in your daily miles, it's ready for it all.Key FeaturesLightweight aluminium frame – Easy to handle, efficient and responsiveCarbon fork – Smooths out bumps for a more comfortable ride1x drivetrain – Simple, low-maintenance gearing with a wide rangeHydraulic disc brakes – Confident, all-weather stopping powerAccessory-ready – Mounts for racks, fenders, lights and moreWho it's forThe FX 3 is ideal for riders who want a do-it-all bike with performance-minded features that don’t compromise on comfort or utility. It’s just as ready for commuting and errands as it is for fitness rides and weekend adventures.
The Trek FX 3 Gen 4 Hybrid Bike is designed for riders seeking a versatile, high-performance bicycle for commuting, fitness, and general trail use. Its lightweight aluminum frame, carbon fork, and reliable 1x drivetrain offer an efficient and comfortable ride, while powerful disc brakes ensure confident stopping in all conditions. A key caveat is that while it's ready for accessories, these are typically sold separately, requiring additional investment for full utility.
All features
Model Part Number
5336765
Brand
Trek
Extended Product Information
FAQs
What is the intended use for the Trek FX 3?
The Trek FX 3 is a versatile hybrid bike suitable for commuting, fitness rides, running errands, and exploring rail trails or light off-road paths. It balances speed, comfort, and practicality.
What size bike do I need?
Sizing depends on your height and inside leg measurement. Please refer to the sizing chart in the product information: S (155-165cm), M (165-175cm), L (175-186cm), XL (186-197cm).
Can I fit wider tires on this bike?
The bike comes with 700x35mm tires and has clearance for up to 35mm wide tires on its Tubeless Ready rims.
Does it come with pedals?
Yes, the Trek FX 3 comes with Bontrager City pedals.
What is the warranty on the Trek FX 3?
Trek typically offers a limited lifetime warranty on frames and forks against defects in materials and workmanship. Other components have a shorter warranty period. Please refer to Trek's official warranty information for details.
How do I convert to tubeless tires?
You will need tubeless-ready tires (Bontrager H2 Comp are wire bead, so check compatibility or replace), tubeless rim tape, sealant, and tubeless valves. Ensure the Bontrager Tubeless Ready rims are properly taped. Installation involves applying sealant and inflating to seat the tire bead.
Is this bike suitable for long-distance touring?
While it has rack mounts for carrying gear, the FX 3 is primarily designed for commuting and fitness. For extensive, heavily loaded touring, a dedicated touring bike might offer more comfort and load-carrying capacity. However, for lighter touring or bike packing, it can be a capable option.
Troubleshooting
Brakes feel soft or ineffective.
Check brake pad alignment and wear. If the issue persists, the hydraulic system may need bleeding. Consult a qualified bike mechanic.
Gears are skipping or not shifting smoothly.
Inspect the derailleur hanger for bends. Ensure the derailleur is properly adjusted. Clean and lubricate the chain and cassette. If problems continue, the cable may need adjustment or replacement.
Chain drops off the front chainring.
The 1x narrow-wide chainring design helps retain the chain. If dropping occurs, ensure the chain is not excessively worn and check the chainline. A chain catcher can be added if necessary.
Popping or clicking noises when pedaling.
This could be from various sources: check crank arm tightness, pedal tightness, bottom bracket security, and saddle clamp tightness. Dirt or debris in the drivetrain can also cause noise.
Front fork making noise on bumps.
Ensure the thru-axle is securely tightened. The carbon fork is designed to absorb vibrations; if a loud clunking occurs, consult a mechanic to check for damage or loose components.
Pros and Cons
Pros
Versatile for commuting, fitness, and light trail riding.
Comfortable ride due to the carbon fork and ergonomic grips.
Simple and reliable 1x drivetrain requires less maintenance.
Strong and consistent braking performance with hydraulic disc brakes.
Ready for accessory customization with integrated mounts.
Cons
Accessory mounts are present, but racks and fenders are not included.
The 1x drivetrain might require adaptation for riders accustomed to 2x or 3x systems on steep climbs.
While durable, the wire bead tires are less performance-oriented than tubeless-ready options (though the rims are TLR).
The included saddle is basic and may require replacement for long-distance comfort.
Internal cable routing, while clean, can make maintenance slightly more complex.
Setup, Compatibility & Care
Setup: Upon delivery, the FX 3 may require some final assembly, typically including attaching the handlebars, front wheel, pedals, and seatpost. It's recommended to have a qualified bicycle mechanic perform this final setup to ensure safety and proper function. Ensure all bolts are tightened to the manufacturer's specifications.
Compatibility: The bike is compatible with standard bicycle accessories such as racks, fenders, lights, and bottle cages, utilizing the pre-drilled mounts. The frame and fork are designed for 700c wheels with tire clearance up to 35mm. The seatpost diameter is 27.2mm. The stem is Blendr compatible for integrated accessory mounting.
Care: Regular cleaning with mild soap and water is recommended. After riding in wet conditions, dry the chain and consider applying a lubricant. Periodically check tire pressure and brake pad wear. For the drivetrain, clean and lubricate the chain regularly. Inspect brake rotors and pads for wear and contamination. Store the bike in a dry place away from extreme temperatures.