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It's right for you if...
You're ready to go full suspension, and you want a versatile trail bike at a great value. You want a ride that's sure-footed, capable, and responsive so you can stay in control no matter where you're riding.
The tech you get
A lightweight aluminum frame with a Knock Block steerer stop to protect against spinning bars. A 140mm RockShox Recon Silver fork, 130mm of rear travel with an X-Fusion Pro 2 shock, a durable 12-speed Shimano Deore drivetrain, dropper post, and hydraulic disc brakes.
The final word
You get full suspension performance without the sticker shock. Fuel EX 5 has the same frame technology as our higher-end alloy Fuel EX models with parts chosen to keep the price tag low and stoke level high.
See it in action
favorite_borderWhy you'll love it
- You get a high-end ride at an exceptional value with frame features like Boost148 and ABP that give you confident handling and room to upgrade parts as your skills grow
- It has the capability of far more expensive trail bikes: it shreds singletrack and can even handle the occasional XC or enduro race
- The dropper post lets you lower your saddle on the fly so it's out of the way on descents
- The RockShox fork's DebonAir spring can easily be adjusted for a specific rider weight, and it's lighter than a coil spring
- We expanded our size range to ensure a better fit for all riders. And, you get the fastest wheel that fits your frame: XS frames get 27.5˝ wheels, S frames get to choose between 27.5˝ or 29˝, and sizes M to XL get 29˝ wheels
"A world-class trail bike"
"Fuel EX is a beautifully balanced and capable trail bike. The rear suspension is beautiful; as close to ideal as any bike I've ridden. It's sensitive where you want it to be, firm and crisp where it should be. It feels deep and controls big hits very well, and there's a nice platform for pedaling, and to pump and pop off when you're playing."
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"An absolute trail rocket"
"Thanks to its burlier components, increased travel, and more aggressive geometry, it has become more of a shredder than ever! More performance, fun, and trail prowess."
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"Perfect all-arounder"
"In a world where most new full-suspension mountain bikes are amazing, Fuel EX stands apart as even more than that."
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"Good at pleasing everybody"
"Fuel EX has a few tricks that help it keep a level head when outside of its comfort zone, and to be a cloud on rails when it's in the zone. Everything about the Fuel EX, which was already good at pleasing everybody, is now even better at it."
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Features
Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.
Will my bike have a curved top tube?
Smaller frames (XS and S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frames (M and up) have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.
Trek's Straight Shot frame design optimizes the stiffness-to-weight ratio for a more responsive ride. You'll be able to push harder and stay more planted on your line when the going gets rough.
Control Freak Cable Management
The lightest, quietest, most versatile cable management system allows any combination of shift, brake, lockout, and dropper post lines to be routed through the frame for clean looks and the ultimate custom setup.
Boost148/110
Wider dropouts (110mm front, 148mm rear) give you the stiffness of a 27.5" wheel with all the benefits of a 29" wheel, and Boost148 in the rear lets you run wider tires and a larger chainring without affecting q-factor and pedaling efficiency.
Mino Link adjustable geometry
Fine tune head tube angle by 1/2° and BB height by up to 10mm with the simple turn of a nut. Just flip the link to choose between slack or slacker geometry, without negatively affecting suspension performance. A Trek exclusive.
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Alpha Platinum Aluminum
Our premium lightweight aluminum is continuously cold extruded and butted at multiple points, and hydroformed into sophisticated tube shapes for maximum strength and minimum weight.
Suspension Calculator
This suspension calculator will help you optimize your suspension settings for your riding weight. Simply follow the steps to find your best set up.
Learn more
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | Alpha Platinum Aluminum, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130mm travel |
|---|---|
| *Fork |
Size:
XS , S RockShox Recon Silver, DebonAir spring, Motion Control damper, lockout, tapered steerer, 46mm offset, Boost110, Maxle Stealth, 140mm travel |
|
Size:
S , M , ML , L , XL RockShox Recon Silver, DebonAir spring, Motion Control damper, lockout, tapered steerer, 42mm offset, Boost110, Maxle Stealth, 140mm travel |
|
| *Shock |
Size:
XS , S X-Fusion Pro 2, 2-position damper, 210x52.5mm |
|
Size:
S , M , ML , L , XL X-Fusion Pro 2, 2-position damper, 210x55mm |
|
| Max compatible fork travel | 150mm (561mm axle-to-crown) |
| *Wheel rear |
Size:
XS , S Alex MD35 rim/MST148A Boost hub, 27.5'', 32H, 14 Gauge Spokes, Micro Spline Freehub, Black rim graphics, spokes, and nipples |
|---|---|
|
Size:
S , M , ML , L , XL Alex MD35 rim/MST148A Boost hub, 29'', 32H, 14 Gauge Spokes, Micro Spline Freehub, Black rim graphics, spokes, and nipples |
|
| Hub front | Bontrager alloy, 6-bolt, Boost110, 15mm thru axle |
| *Hub rear |
Size:
XS , S , M , ML , L , XL Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle |
|
Size:
XS , S , M , ML , L , XL Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle |
|
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Rim | Alex MD35, tubeless compatible, 32-hole, 35mm width, presta valve |
| Spokes | 14g stainless steel |
| *Tire |
Size:
XS , S Bontrager XR4 Comp, wire bead, 30 tpi, 27.5x2.60'' |
|
Size:
S , M , ML , L , XL Bontrager XR4 Comp, wire bead, 30 tpi, 29x2.60'' |
|
| Rim strip | Bontrager TLR |
| Max tire size | Frame: 29x2.60" Fork: See manufacturer |
| Shifter | Shimano Deore M6100, 12 speed |
|---|---|
| Rear derailleur | Shimano Deore M6100, long cage |
| *Crank |
Size:
XS , S , M , ML , L Shimano MT511, 30T steel ring, Boost (52mm chainline), 170mm length |
|
Size:
M , ML , L , XL Shimano MT511, 30T steel ring, Boost (52mm chainline), 175mm length |
|
| Bottom bracket | Shimano MT500, 92mm, PressFit |
| Cassette | Shimano Deore M6100, 10-51, 12 speed |
| Chain | Shimano Deore M6100, 12 speed |
| Max chainring size | 34T |
| Saddle | Bontrager Arvada, steel rails, 138mm width |
|---|---|
| *Seatpost |
Size:
XS , S TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length |
|
Size:
M , ML , L , XL TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length |
|
| Handlebar | Bontrager alloy, 31.8mm, 15mm rise, 750mm width |
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| Stem | Bontrager Rhythm Comp, 31.8mm, Knock Block, 0 degree, 50mm length |
| Headset | Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom |
| Brake | Shimano hydraulic disc, MT201 lever, MT200 caliper |
| Brake rotor | Shimano RT56, 6-bolt, 180mm |
| Weight | M - 34.61 lbs / 15.7 kg |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
Sizing & fit
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local retailer.
Rider Height
Inseam
XS
137.0 - 155.0 cm
4'5.9" - 5'1.0"
64.0 - 73.0 cm
25.2" - 28.7"
S
153.0 - 166.5 cm
5'0.2" - 5'5.6"
72.0 - 79.0 cm
28.3" - 31.1"
M
161.0 - 172.0 cm
5'3.4" - 5'7.7"
76.0 - 81.0 cm
29.9" - 31.9"
M/L
165.5 - 179.0 cm
5'5.2" - 5'10.5"
77.0 - 84.0 cm
30.3" - 33.1"
L
177.0 - 188.0 cm
5'9.7" - 6'2.0"
83.0 - 88.0 cm
32.7" - 34.6"
XL
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
2XL
195.0 - 203.0 cm
6'4.8" - 6'7.9"
92.0 - 95.0 cm
36.2" - 37.4"
All measurements provided in cm unless otherwise noted.
| Frame size number | Frame size letter | Geometry position | Wheel size | A — Seat tube | B — Seat tube angle | Effective seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14.0 | XS | Low | 27.5" | 35.6 | 69.0° | 75.0° | 9.0 | 66.0° | 54.6 | 33.5 | 2.1 | 43.7 | 4.3 | 11.1 | 112.0 | 69.5 | 39.5 | 56.3 |
| 14.0 | XS | High | 27.5" | 35.5 | 69.5° | 75.5° | 9.0 | 66.5° | 54.5 | 34.1 | 1.4 | 43.6 | 4.3 | 10.6 | 111.9 | 70.0 | 40.0 | 55.9 |
| 15.5 | S | Low | 27.5" | 39.5 | 69.0° | 75.0° | 10.0 | 66.0° | 56.8 | 33.5 | 2.1 | 43.7 | 4.3 | 11.1 | 114.4 | 70.0 | 41.5 | 57.2 |
| 15.5 | S | High | 27.5" | 39.5 | 69.5° | 75.5° | 10.0 | 66.5° | 56.7 | 34.1 | 1.4 | 43.6 | 4.3 | 10.6 | 114.3 | 70.7 | 42.0 | 56.8 |
| 17.5 | M | Low | 29" | 42.0 | 67.5° | 75.0° | 10.0 | 66.0° | 60.3 | 34 | 3.4 | 43.7 | 4.3 | 11.9 | 117.9 | 74.2 | 44.0 | 60.9 |
| 17.5 | M | High | 29" | 42.0 | 68.0° | 75.5° | 10.0 | 66.5° | 60.2 | 34.6 | 2.8 | 43.6 | 4.3 | 11.6 | 117.8 | 74.8 | 44.5 | 60.5 |
| 18.5 | ML | Low | 29" | 43.5 | 67.5° | 75.0° | 10.5 | 66.0° | 61.9 | 34 | 3.4 | 43.7 | 4.3 | 11.9 | 119.6 | 74.5 | 45.5 | 61.3 |
| 18.5 | ML | High | 29" | 43.5 | 68.0° | 75.5° | 10.5 | 66.5° | 61.8 | 34.6 | 2.8 | 43.6 | 4.3 | 11.6 | 119.5 | 75.1 | 46.0 | 60.9 |
| 19.5 | L | Low | 29" | 45.0 | 67.5° | 75.0° | 10.5 | 66.0° | 63.4 | 34 | 3.4 | 43.7 | 4.3 | 11.9 | 121.1 | 75.0 | 47.0 | 61.3 |
| 19.5 | L | High | 29" | 45.0 | 68.0° | 75.5° | 10.5 | 66.5° | 63.3 | 34.6 | 2.7 | 43.6 | 4.3 | 11.6 | 121.0 | 75.6 | 47.5 | 60.9 |
| 21.5 | XL | Low | 29" | 50.0 | 67.5° | 75.0° | 12.0 | 66.0° | 66.3 | 34 | 3.4 | 43.7 | 4.3 | 11.9 | 124.2 | 76.2 | 49.5 | 62.7 |
| 21.5 | XL | High | 29" | 50.0 | 68.0° | 75.5° | 12.0 | 66.5° | 66.2 | 34.6 | 2.7 | 43.6 | 4.3 | 11.6 | 124.1 | 76.8 | 50.0 | 62.3 |