Mid or long travel on the same bike? The Trek Fuel EX versus the LX

If you love climbing hard and descending without fear, you've surely asked yourself the question: mid or long travel? The Trek Fuel EX and its sister, the LX, try to answer it with one platform in two set-ups, and an in-depth test has just compared both on the trail to see whether that modular promise holds up in practice.

According to Singletracks, the Fuel was ridden both in its mid-travel EX build and in its long-travel LX build, with a clear goal: to see whether what you gain on one side makes up for what you give up on the other.

Trek Fuel EX and LX: one base, two characters

The idea behind it is easy to grasp. Instead of two completely different bikes, Trek offers a family where the frame and the philosophy are shared and what changes is the travel and, with it, the bike's character on the trail.

• Fuel EX: the mid-travel option, made for riders who want a versatile trail bike that climbs well and doesn't get bored on the calmer tracks.
• Fuel LX: the long-travel version, for riders who put technical descents first and want more margin when the terrain gets serious.

The test focuses on exactly that: the trade-offs. More travel usually brings more confidence on the way down, but it can also take some liveliness out of pedalling. Less travel usually gives you a more agile bike, but with less cushioning when the rocks arrive.

What it means for the way you ride

Before choosing one or the other, think about the rides you actually do, not the ones you'd like to do once a year. These questions will help you decide:

• How much of your ride do you spend climbing and how much descending?
• Are your usual trails fast and flowing or rough and technical?
• Do you do long rides of many hours or short, intense outings?
• Do you go to bike parks or areas with lifts now and then?

If most of your answers point to lots of pedalling and varied trails, the EX makes perfect sense. If demanding descents are your thing and you don't mind sweating a bit more on the climbs, the LX will give you more peace of mind. The interesting thing about the modular approach is that the decision doesn't lock you into a bike from another planet: it's the same base with two starting points.

Buying a second-hand Trek Fuel: what to check

The Fuel is one of the most popular trail bikes and you'll often see it on the second-hand market. If you're browsing second-hand mountain bikes, keep these points in mind:

• Confirm the version: ask whether it's an EX or an LX and how much travel it really has. With modular platforms, a bike may have changed set-up over time.
• Suspension: ask for the service history of the fork and shock, and check for play or oil leaks.
• Swingarm bearings: with the bike on the ground, move the rear wheel from side to side; there shouldn't be any play.
• Size and geometry: the same platform doesn't mean it feels the same; try it in your size.

And if you want to compare it with other models from the brand, the Trek bikes page groups the listings so you can get a quick idea of what's out there.

A trail bike that adapts to you

The best thing about this approach is that it puts the focus on the way you ride, not on a travel figure. Choosing well between the EX and the LX is, in the end, choosing the trails you enjoy most.

If you're thinking of making the jump and your current bike is staying in the garage, post your listing for free and let someone else keep riding it while you try out your new trail bike.