A new breed of mountain bike
First there was the forest. Next came the trail. And then there were mountain bikes. Hardtails for hammering. Full suspensions for crushing. Short travel whips. Long travel steeds. High powered e-bikes. Now—there’s Fuel EXe. Evolved to break the mold, bridge the gap, and elevate your ride with quiet assist that all but disappears in the woods. Fuel EXe is the culmination of your every desire on singletrack. It’s an e-mountain bike that empowers you to do more, without interrupting the way you experience nature.
Just as a mountain bike should.
It’s your best trail ride ever, with extra Fuel in the tank.
DOWN TO EARTH OUT OF THIS WORLD
Natural look. Natural ride. Surprisingly electric.
Noise
0.12tu
Tonality units - barely perceivable
Assist
Up to 20 mph
Range
2-5 hrs / 360Wh
3-7.5 hrs with 160Wh extender
Torque
50nm
“The most significant bike launched this decade”
Fuel EXe reviews
“Simply put, nothing comes close to the Fuel EX-e when you paint the picture of the mountain bike experience as a whole.”
– Pinkbike
“We’d go as far to say that it’s probably going to be the most significant bike launched this decade”
– Singletrack
“...I was in love with this bike. In fact, I’m going to declare that this is one of the best mountain bikes—powered or unpowered—I’ve recently ridden.”
– Bicycling
“We have to call it as we see it and the Trek Fuel EXe just elevated the eMTB game. 4.5/5 stars.”
– Vital MTB
“… the first impression was a unanimous “wow”. This is one of the few times that a bike exceeded expectations.”
– Mountain Bike Action
“The Trek Fuel EX-E is nothing less than a great leap forward for eMTBs.”
– NSMB
“The end of the gap between electrified and conventional bikes. The foundation of a completely new category in the world of mountain bikes.”
– BikeBoard.at
“a new generation of light eMTBs that makes the analogue mountain bike world shake … the Trek Fuel EXe 2023 is hardly recognizable as an eMTB.”
– Enduro-MTB.de
Sometimes the beauty isn’t in what we see, but what we don’t. Nestled neatly behind the front chainring, the naturally advanced harmonic pin ring transmission blends in effortlessly. Its petite package allows for a 39% smaller down-tube than a traditional e-MTB, resulting in a ride that fits right in with traditional mountain bikes on the trail.
The ultimate featherweight
With a motor scaling in at 1.85kg and total system weight of only 3.9kg, Fuel EXe is one of the lightest e-mountain bikes on the market.
Tiny but mighty
Despite being smaller than your chainring, the drive unit hits with 50Nm of torque.
Good sounds. Bad sounds.
Less is more
When we’re on the trail and connecting with nature, we don’t want to hear more than the sound of our tires on the dirt, the wind through the trees, and the hoots and hollers of our riding crew. Up until now, e-bikes have pulled us away from that experience with high-pitched motors that take us out of the element. Fuel EXe is different. It’s not only quieter—it’s less annoying.
Tonality (sound perception)
When it comes to sound, decibels don’t tell the whole story. Sounds like a ripping current of a river or wind rustling through trees might measure in as quite loud, but they don’t distract us from the ride. That has everything to do with something called tonality.
Simply put, tonality is the measurement of how annoying and perceivable a sound is. It’s the difference between the crunch of leaves under your tire, and a squeaking brake rotor.
Cadence and tonality
Tonality is measured in tonality units, or tu for short. Sounds that measure under 0.1tu aren’t perceivable to the human ear, while sounds over 0.4tu are grating and annoying.
Fuel EXe’s motor is tuned for tone, measuring in under 0.2tu—five times less perceivable than other light-assist bikes—so you can forgo the annoying whine of most e-bike motors to stay in the moment and connected with nature while you ride.
Data recorded in an anechoic chamber using a calibrated B&K 4966-h-041 microphone and Siemens SCADAS data acquisition unit with an acoustically-isolated Wahoo Kickr trainer set to 300W total resistance and bikes in maximum assist mode. Microphone was located 1 m laterally from the bottom bracket and 1.7 m off the floor (head height) and sampled at 51,200 Hz. Tonality calculated in Siemens Testlab Neo according to the ECMA-74:2019 standard.
While some e-bikes feel cumbersome and bulky, Fuel EXe is light, nimble, and playful, just as a trail bike should be. Its capable geometry is fine-tuned for barreling into berms and making light work of tech trails, lacing turns through tight aspens, and gnawing through rowdy rock gardens. Instead of being flung uphill like a rocket launcher, Fuel EXe’s assist feels natural, barely there — like an extension of your own power, so you can ride just like you would on a traditional mountain bike.
Built like a trail bike. Rips like a trail bike.
01
Fuel EXe is built with trail bike geometry that’s slack and capable out front with a 65-degree head tube angle.
02
A 77-degree seat tube angle keeps you perched for punchy climbs and long pedal fests up fire roads.
03
With a compact motor, Fuel EXe’s chainstays are able to stay tight at just 440mm, keeping the ride nimble and playful.
Dialed for how you ride
Mino Link lets you quickly and easily tweak your geometry, so your bike is always tuned perfectly for the terrain and your riding style.s, the way you tell your story online can make all the difference.
Just right
With 50Nm of torque, Fuel EXe has just the right amount of force for cranking up steep climbs without launching you forward with jerky propulsion. It finds the sweet spot between too much and too little for a ride that’s natural and smooth, but not overwhelmed.
Most e-bike motors use gears and belts to move you forward— but belts and gears lash, slip, rattle, and wear out over time. That disconnects you from the ride. Fuel EXe uses a motor unlike anything else out there—the TQ harmonic pin ring transmission. The harmonic pin ring transmission is not only smaller and lighter than traditional e-bike motors, but because it has fewer moving parts it’s also smoother, quieter, and more durable. It delivers more of the ride experience without any downside.
Ingenious integration
The integrated display sits flush with your top tube and tucked completely out of the way. Easily see the details you need when you want to, and let them disappear when the trail is all that matters.
Discrete control
An intuitive and discrete handlebar remote allows you to toggle between modes without your hand leaving the safety of your grip.
Watts up
Packing in a whopping 360Wh, the battery offers plenty of power for big rides. It’s stowed away efficiently to take up less space in the down tube than traditional e-bike batteries and is simple to remove with a hex wrench.
The Fuel EX Family
Are you all about assist or more of a traditionalist? No matter your pedaling preference, the Fuel EX family has you covered with the all-mountain capability you need to blast berms and slay technical sections. If adding some pep to your pedals tickles your fancy, Fuel EXe will give you just the assist you need, while Fuel EX is ready for days when you want to earn every descent on your own.
Which is right for you?
Rail
Want an e-MTB that doesn’t hold back on power? Rail is the choice for riders who want to blast up climbs effortlessly with a full powered steed. It’s built for those who consider the trail their second home and want a ride that rips as hard as its non-electric siblings.
Fuel EXe
Looking for a balance of power and natural ride feel? Fuel EXe offers smooth assist that doesn’t overdo it. With just enough power to make climbing a breeze, and a lightweight, nimble ride that feels like a traditional trail bike, Fuel EXe is the go-to for those who want an e-bike that doesn’t look like an e-bike.
Trails are better with Trek