FX 1 SO M Dark Star

FX 1 is a versatile and sleek hybrid bike for riding all around town. It's perfect to ride for exercise, commuting, or fun. You get price-conscious parts that still deliver a big range of speeds, disc brakes that let you stop on a dime, and loads of mounts for accessories.

• Confident disc braking means bad weather doesn't have to keep you from enjoying your ride
• The cables are routed internally, which protects them from the elements and adds to the bike's sleek look
• It's easy to accessorize with racks, a kickstand, fenders, lights, and more!
• Like every Trek hybrid, it's backed by a lifetime warranty and supported by a wide network of retail partners

A better way to produce aluminum

Starting in 2024, we began removing high-emission aluminum from our manufacturing and replacing it with low-emission aluminum made with renewable energy. By October 2025, nearly every alloy bike we make - this one included - had made the switch, driving a major drop in our footprint.

Upgrade your pedals and love your bike more

Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.

Frame	Alpha Gold Aluminum, internal cable routing, rack & fender mounts, post mount disc, kickstand mount, 135x5mm QR
Fork	FX steel, flat-mount disc, rack mounts, 410mm axle-to-crown, ThruSkew 5mm QR
Tire	Bontrager H2 Comp, wire bead, 30 tpi, 700x35mm
Hub Front	Formula DC-20, alloy, 6-bolt, 100x5mm
Hub Rear	Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm
Skewer Front	139x5mm bolt-on
Skewer Rear	152x5mm QR
Shifter	Shimano EF500, 8 speed // Shimano EF500, 8 speed
Front Derailleur	Shimano Tourney TY606, 31.8/34.9mm clamp, top swing, dual pull
Rear Derailleur	Shimano Acera M3020-8, 40T max cog
Crank	Forged alloy, 46/30, 170mm length
Bottom Bracket	Sealed cartridge, 68mm
Cassette	Shimano HG200, 12-32, 8 speed
Chain	KMC Z8.3
Brake	Tektro MD-U310 mechanical disc // Tektro MD-U310 mechanical disc
Brake Rotor	Tektro wave, 6-bolt, 160mm
Pedal	Wellgo nylon platform
Saddle	Bontrager Sport
Seatpost	Bontrager alloy, 27.2mm, 12mm offset, 330mm length
Handlebar	Bontrager Riser, steel, 25.4mm, 30mm rise, 600mm width
Stem	Bontrager alloy, 25.4mm clamp, 10 degree, 90mm length
Grips	Trek Ergonomic Comp, lock-on

Geometry Chart

B B Drop	6.5
B B Height	28.5
Chainstay Length	44.7
Eff Top Tube	56.3
Frame Reach	39.3
Frame Size Letter	M
Frame Size Number	50
Frame Stack	59.4
Head Angle	71.0°
Head Tube Length	16.5
Offset	5
Seat Tube	42
Seat Tube Angle	74.0°
Standover	75.4
Trail	6.8
Wheelbase	107
Wheel Size	700c