Trek FX Sport AL 3

FX Sport AL 3 is a lightweight, versatile aluminum bike, perfect for exploring the path less traveled. It comes ready for anything, with a reliable and light Alpha Gold Aluminum frame, 10-speed Shimano CUES shifting, go-anywhere Bontrager Girona gravel tires, and hydraulic disc brakes.

Fast and comfortable

Our Active geometry puts you in a slightly more forward position to give you more pedalling efficiency while staying comfortable on long rides.

All-Road capable

Wide 42c Girona tires offer traction and control on paved or unpaved paths.

Reliable and durable

The Shimano CUES drivetrain offers a hassle-free, low-maintenance performance riders can rely on for the long haul. CUES features Shimano’s new LINKGLIDE drivetrain technology for less wear and tear on chains, cassettes, and chainrings.

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	Dual Sport carbon, internal brake routing, fender mounts, rack mounts, ThruSkew 5mm QR
Tire	Bontrager Girona Comp, wire bead, 60 tpi, 700x42mm
Hub Front	Formula DC-20, alloy, 6-bolt, 100x5mm
Hub Rear	Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm
Rim	Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve
Skewer Front	139x5mm bolt-on
Skewer Rear	152x5mm QR
Shifter	Shimano CUES U6000 w/optical gear display, 10 speed
Rear Derailleur	Shimano CUES U6000 GS
Crank	Prowheel alloy, 40T narrow-wide ring, 170mm length
Cassette	Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
Chain	Shimano LG500, 9/10/11 speed
Brake	Shimano hydraulic disc, MT201 lever, UR300 caliper // Shimano hydraulic disc, MT201 lever, UR300 caliper
Brake Rotor	Shimano RT26, 6-bolt, 160mm
Pedal	Wellgo nylon body, alloy cage
Saddle	Verse Short, chromoly rails, 145mm width
Seatpost	Bontrager alloy, 27.2mm, 12mm offset, 330mm length
Handlebar	Bontrager Comp Lowriser, alloy, 31.8mm, 15mm rise, 600mm width
Stem	Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length
Grips	Trek Line Comp, nylon lock-on

Geometry Chart

B B Drop	6.5
B B Height	28.5
Chainstay Length	44.7
Eff Top Tube	52.8
Frame Reach	38.3
Frame Size Letter	XS
Frame Size Number	40
Frame Stack	54.3
Head Angle	70.0°
Head Tube Length	11.5
Offset	5
Seat Tube	33
Seat Tube Angle	75.0°
Standover	67.5
Trail	7.4
Wheelbase	105.2
Wheel Size	700c