MY23 Fuel EXe FAQ

Frame Details:
In which Mino Link position does the bike ship? Low

Do any frame sizes feature curved top tubes for lower standover? No.

Are all sizes compatible with a water bottle? Yes. Size Small is only compatible with a 20oz bottle.

Which version of Knock Block does it use? Fuel EXe does not have Knock Block because we wanted to make room for the integrated display.

Do all frame sizes use the same wheel size? Yes, all frame sizes come stock with 29” wheels.

Is it compatible with other wheel/tire sizes? Yes, this bike is mullet compatible. Riders can run a 27.5” rear wheel for better bike-to-body clearance and more agile handling. This requires the Mino Link to be in the High position. Note, the smaller wheel circumference will affect the accuracy of the speed reading and cannot be adjusted.

Parts Compatibility

What is the maximum tire size? 29x2.5”

What is the maximum fork axle-to-crown and/or travel? 160mmor567mmaxle-to-crown

How much dropper post insertion does the frame have? S–190mm, M–225mm, L–250mm, XL–285mm. The minimum amount of insertion is 80mm.

What is the maximum chainring size? Minimum chainring size? Max: 34Tround; Min: 30T, most 104BCD rings should work. Oval rings of any size are not recommended as they will affect motor performance.

What is the chain line? 55mm

What is the crank interface? Standard ISIS interface for e-bikes.

Are these bikes tubeless compatible? What additional parts are required? All Fuel EXe models come completely tubeless with rim strips, valves, and sealant.

Does it have ISCG mounts? No, but it does have mounts for the custom e*Thirteen chain guard that is included with all models. SKU W5276728.

What is the rear brake mount? What is the max rotor size? 180mm direct mount, max 203mm.

Are Shimano E-Rotors compatible? Yes.

Which aftermarket shocks are compatible? We know that the following shocks will fit. Other shocks may fit, as there is generous clearance, but should be checked for frame clearance at full suspension compression.

Fox Float X-Fox DHX
RockShox Super Deluxe
All coil shocks from Fox and RockShox

What size hardware is needed for aftermarket shocks? 205mm x 60mm eye-to-eye,54mmx 10mm trunnion mount upper, 40mmx 8mm pin mount lower.

Why is there a wire coming out of my AXS derailleur? The SRAM Extension Cord powers your AXS derailleur with the main e-system battery so you never have to worry about charging your AXS battery separately.

Does it have any accessory mounts (kickstand, racks, fenders, lights)? Fuel EXe does not have those mounts.

TQ system

Is there an app? Yes! Download the Trek Central

Battery Info

How much does the battery weigh? 1,835 grams

Can the battery be charged when it is removed from the bike? Yes. There is a charge level indicator on the battery with five bars and an optical switch. Cover the bar on the end, and the rest will light up according to the current charge level.

How long does the battery take to charge? Approximately two hours.

Will the battery be damaged if it is plugged in too long? No, it will just stop charging when it is full. However, never leave a charging battery unattended.

Will the battery be damaged if it discharges all the way? No, but you should charge it. The battery can be damaged by storing it completely empty. If you aren’t going to ride the bike for three months or more, keep the battery charged above 30%.

Are there any other special instructions for the battery? Please note that the battery will only last to about 15% capacity the first time it is depleted. So don’t be alarmed if the range on your first ride is a little shorter than expected. After the first full depletion and subsequent charging, the battery management system will “learn” what it needs to know and will deplete all the way to 0% on future rides. Also note that any time the battery reaches less than 10% charge, the motor output will be reduced to110watts. The battery level indicator will flash to indicate Low Battery mode.

Range Extender

How to get the Range Extender? This can be ordered via a Trek retailer in-store or online.

How much does the Range Extender weigh? 900 grams

How much extra range do you get? Approximately 40% additional range.

Can I ride Trek Fuel EXe with only the Range Extender and no battery? Yes! This also allows you to fly with Fuel EXe by leaving the main battery behind and taking the RangeExtender in your carry-on. Check with your airline before travelling to confirm compliance with regulations.

With the main battery removed do I need a cover for the frame if riding with the Range Extender only? We recommend re-installing the battery cover even when the main battery is not installed.

How long does it take the Range Extender to charge? Approximately one hour.

Are all sizes compatible with Range Extender? Yes!

Is the Range Extender compatible with any bottle cage? We strongly recommend using the Bontrager Side Load cage and the retention strap that comes with the Range Extender. Other cages may work, but we have not tested them.

Riding Fuel EXe

What is the range? Range varies significantly depending on many factors such as rider weight, assist level, tire choice, riding surface, terrain, and more. Varies from 2–5 hours.

How many assist modes are there? There are three assist modes.

Is there a dynamic mode like Bosch’s eMTB mode? All three modes are dynamic and tuned by Trek for mountain biking.

Can I customize the assist behaviour? Yes. Both the Trek and TQ apps allow you to adjust max power, assist factor, and pedal response. If you don't like your changes, it’s easy to reset back to the factory settings.

Is there a walk assist? Yes. See the Quick Start guide for instructions.

Can I ride without the remote? Not if you want assist. You can turn the bike on by pressing the button on the display, but you must use the remote to select an assist mode.

Will the e-system work in extreme temperatures? Follow the temperature range guidelines in the Quick Start guide.