Trek FX Sport AL 3

A Lightweight All-Road Aluminium Hybrid Ready for Paved and Unpaved Paths

The Trek FX Sport AL 3 is a versatile flat-bar bike built on an Alpha Gold Aluminum frame part of Trek's low-emission aluminium transition that began in 2024. By October 2025, this bike had completed the switch to aluminium produced using renewable energy, resulting in a significantly reduced manufacturing carbon footprint for the frame without changing its performance characteristics. Alpha Gold Aluminum sits within Trek's aluminium hierarchy as a lightweight and reliable construction suited to a performance-oriented flat bar platform.

The Active geometry positions the rider in a slightly more forward posture than a purely relaxed hybrid geometry, more pedalling-efficient and more engaged than a comfort-oriented bike, while remaining comfortable over longer rides. This geometry suits riders who want to cover distance efficiently without committing to the aggressive position of a drop-bar road bike. It is the geometry choice of a bike designed to move quickly on both road and trail surfaces.

The bike comes with a set of pedals included. Trek recommends considering a flat pedal upgrade as pedals are one of five contact points between rider and bike, and an appropriate choice can meaningfully improve grip and control for your riding style.

42c Bontrager Girona Gravel Tyres and All-Road Capability

The FX Sport AL 3 is fitted with Bontrager Girona gravel tyres in a 42c width tyre that provides traction and control across both paved and unpaved surfaces. A 42c tyre is significantly wider than a standard road tyre, offering additional cushioning over rough surfaces, improved grip on loose or damp terrain, and more stability on paths and light trails where a narrower road tyre would feel uncertain. The Girona is a gravel-specific tyre designed for mixed-surface riding, making it a direct reflection of the FX Sport AL 3's intended use across varied terrain rather than an afterthought tyre choice.

The combination of the Active geometry, CUES LINKGLIDE drivetrain, hydraulic disc brakes, and 42c gravel tyres creates a flat-bar bike that is genuinely capable across the full range of surfaces a rider is likely to encounter road commuting, coastal paths, gravel tracks, and unpaved rail trails without requiring tyre changes or component swaps for different ride types.

Shimano CUES LINKGLIDE 10-Speed and Hydraulic Disc Brakes

The FX Sport AL 3 uses a Shimano CUES 10-speed drivetrain with LINKGLIDE technology, a system designed for significantly extended drivetrain longevity. LINKGLIDE reduces wear rates on the chain, cassette, and chainrings compared to standard drivetrains, meaning the drivetrain components last longer before requiring replacement and perform consistently throughout their extended service life. For a bike ridden regularly across varied surfaces and conditions, this durability focus reduces the frequency and cost of drivetrain servicing over time.