Fuel+ FAQ

What are the new/key features on this platform?

-NEW TQ HPR60 drive unit that's not only more powerful, but quieter and more efficient too
-580WH battery
-New color display on Fuel+ 9.8 and 9.9
-By swapping rocker links, lower shock mounts, and suspension and/or wheels, Fuel+ can be built in three unique configurations to accommodate rider preferences and terrain:

Fuel+ EX: 145mm/150mm 29er
Fuel+ MX: 150mm/160mm MX (29 front, 27.5 rear)
Fuel+ LX: 160mm/170mm 29er

-New frame design that increases dropper insertion, standover clearance, and front triangle space for more clearance for reservoir shocks, water bottles, or other accessories.
-ZS standard headset to allow for aftermarket options, including angle-adjust
-Updated cable routing and chainstay guard for a super-quiet ride
-Offered in Project One MTB for parts customization from the factory, including options for a coil spring, different dropper post lengths, and more.

Is there an option to run 27.5” front and rear?

No. All these frames in all sizes are designed around a 29” front wheel.

Can I change my rear wheel size without changing the rocker link or lower shock mount?

No. The geometry correction for switching between wheel sizes comes from both the rocker link and lower shock mount.
If you don’t change both parts when you switch rear wheel sizes, you’ll end up with either a super low bottom bracket, causing pedal strikes, or a super high bottom bracket and correspondingly steep head tube angle, causing twitchy, unstable handling.

Can I make my Fuel LX into a longer-travel MX by just changing the rocker link, lower shock mount, and rear wheel?

Yes. You can convert a Fuel+ LX build to a 27.5 rear wheel with only the wheel, MX rocker link, and lower shock mount. By keeping the 205 x 65 stroke shock, you will get 163mm of travel vs the stock MX build with a 205 x 60 shock and 150mm travel.

Can I install a longer-stroke shock on my Fuel EX for more rear travel?

Yes. You can install a 205 x 65 shock (max) on your Fuel EX with no other changes for 156mm of rear travel. However, you won’t get the more progressive leverage rate that would come with swapping to the LX rocker link and lower shock mount.

Why does my size Small EX have an MX rocker link?

Size Small Fuel EX and Fuel+ EX models will come with a 29” front wheel, 27.5” rear wheel, 205x60 shock, and 150mm of travel front and rear. The difference between size S EX and size S MX is that MX bikes will come with 160mm forks and are only available as complete bikes in the 9.8, or 9.9 models.

Our rider research has shown that most size S riders prefer a 27.5” rear wheel for a more proportional fit, and more back-wheel-to-body clearance on jumps and descents. Since most common bike-in-a-box (non-P1) Fuel and Fuel+ models will be sold as Fuel EX, we chose to build the size S with the MX rocker link and LSM so that these riders will get the most-commonly preferred setup right out of the box, without having to buy the parts to make the swap to MX themselves.

Size S riders who prefer 29” front and rear wheels can swap the rocker link and LSM and their rear wheel for a full 29er Fuel EX or Fuel+ EX. Or they can also get a size S Fuel LX or Fuel+ LX with 29” wheels right out of the box through the Project One program.

Any size frame can be built in any of the three configurations

Will changing the rear wheel size affect my speed readings or assist cutoff speed?

Yes. If you change your rear wheel size, you must visit your local Trek retailer to have the e-system updated for the new wheel diameter. Not doing so may cause your bike to provide assist above the legally allowed speed limit, which makes it illegal to operate on trails designated for Class 1 eMTBs. Or it may cause your bike to stop providing assist below the legally allowed speed limit.

Will Trek stock the parts required to change from EX to MX or LX?

Trek will stock the rocker links, lower shock mounts, wheels, and tires globally. Suspension availability will vary by market, but will generally need to be sourced from in-market distributors.

How does swapping between EX, MX, and LX affect the geometry?

Most geometry measurements stay the same or have negligible changes. The main change is headtube angle. EX – 64.5; MX – 64.2; LX – 63.5

Which aftermarket shocks are compatible?

The new frame layout leaves tons of room for aftermarket shocks. Most shocks will fit, including all current Fox and RockShox offerings.

是否有车架尺寸采用适合于较低跨高的弯曲上管？

否。

How does the adjustable headset work?

It’s a standard ZS headset now instead of a proprietary part from Trek, which allows aftermarket options for headset upgrades, including angle-adjust options.

Is the bike compatible with a dual crown fork?

No, Fuel is only compatible with single crown forks with 150-170mm of travel.

What sizes are compatible with a water bottle?

All sizes are compatible with a water bottle. Small frames fit a 21oz (620ml) max, while medium to large frames fit a 26oz (769ml) max, and XL fit a 34oz (1005ml) max.

Is the chain supposed to be that close to the chainstay?

When the bike is in the 10T cog, the chain may contact the chainstay guard. This is intentional. To optimize the chainstay for strength, stiffness, and internal cable routing, the section between the tire and chainring is taller than on other bikes.
We also made the chainstay guard taller to decrease noise from chain slap. Clearance will increase under suspension sag and pedaling tension, but you may still notice some wear in the guard over time. This is intended to be replaced as needed, and may not be the case for all riders.

Where can I find information regarding hardware, cable routing, parts compatibility, min/max, and replacement service parts?

Please visit the Fuel Service Manual. This FAQ covers questions not already covered on the bike product page or in the Service Manual. Don’t see your answer there either? Give customer service a call or chat.

Service manuals

Can I replace my black and white display with the color version?

Yes. These items are interchangeable, so you can upgrade your previous gen Fuel EXe, Slash+, or Fuel+ 9.7 and lower (Fuel+ 9.8 and 9.9 come with the color display)

Can I use an oval chainring?

Oval rings of any size are not recommended as they will affect motor performance.

曲柄接口是什么？

电助力自行车的标准 ISIS 接口。

Shimano E-Rotor 是否兼容？

是。

有应用程序吗？

是的！在 Apple App Store 中下载适用于 iOS 的 Trek Central 应用程序，或在 Google Play 商店中下载适用于 Android 的 Trek Central 应用程序，然后按照提示进行操作。

View the App FAQ here.

Trek 应用程序和 TQ 应用程序之间有什么区别？

Trek 应用程序具有 TQ 应用程序的所有功能，包括电机行为自定义、里程估计和一般电子系统信息。此外，Trek 应用程序还包括轮胎和悬架压力设置建议、服务提醒、有用的导航和里程功能、活动跟踪等！

Can I connect Fuel+ to my Garmin or other device?

Yes! You can pair most Bluetooth or ANT+ cycling computers.

Does it have wiring for lights?

Shimano Di2 and SRAM AXS-equipped bikes come with the TQ Smart Box installed. It has output ports for front light, rear light, aux 12, and electronic shifting. It is not included on other models but is an easy aftermarket upgrade.

Can I upgrade my previous-gen Fuel EXe with the new HPR60 motor?

Yes. Upgrading from HPR50 to HPR60 will give you an additional 10 Nm of torque, plus HPR60 is more efficient and even quieter than HPR50. However, your bike’s firmware will only allow you to get 300 watts of peak mechanical power. The full 350 watts that HPR60 is capable of is only available on new Fuel+.
Upgrades must be completed by a Trek retailer using the TQ Dealer Service Tool and TQ dongle, and the cooling fins must be removed.

Will Trek stock motors for upgrades or for warranty only?

For 2026, Trek will stock limited HPR60 motors for warranty only. Non-warranty upgrades will require sourcing a motor from another TQ distributor.

Are the HPR60 cooling fins replaceable?

Yes, they bolt onto the motor and are available as aftermarket replacement parts.

是否提供替换电池/备用电池？

是的，Trek 配送中心将库存 TQ 电池。由于危险品运输规定，无法退回电池。

电池从自行车上取下可以充电吗？

是。

How long does the battery take to charge?

The 580Wh battery will charge in about 3-4 hrs.

Are there any other special instructions for the battery?

Please note that the battery will only last to about 15% of its full 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 to protect the battery. The battery level indicator will flash to indicate Low Battery mode.

How do customers get the Range Extender?

They can order it through their local Trek retailer. Range Extender batteries are not eligible for return by the retailer due to hazmat shipping regulations. Each retailer will set their own policy regarding customer returns of Range Extender batteries.

Can I ride Fuel+ with only the Range Extender?

Yes! This also allows you to fly with Fuel+ by leaving the main battery behind and taking the Range Extender in your carry-on. Check with your airline before traveling to confirm compliance with regulations. You will need to order the clip nut that replaces the threads on the battery for keeping the motor cover in place. See service manual for details.

增程器充电需要多长时间？

约一个小时。

是否所有尺寸都兼容增程器？

是的！

增程器兼容所有水壶架吗？

我们强烈建议使用 Bontrager 侧装水壶架和 Range Extender 随附的固定带。其他水壶架也许可行，但我们还没有对它们进行测试。

有步行助力吗？

是。有关说明，请参阅快速入门指南。

Can I ride without the remote?

Yes, you will need to connect your bike via the TQ app to toggle on the extended center button functionality. Once this function is on you will push the button on the display to change assist modes and double click the display button to switch between what is shown on the display.