Trek Fuel+ EX, MX and LX: parts and specs
Replacement parts and specs for the Trek Fuel+ Gen 2 e-MTB in EX, MX and LX builds: 29 inch front wheel, 27.5 or 29 inch rear, TQ HPR60, 580 Wh battery, range extender and TQ displays.
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Specs are for the stock bike as sold; check your own bike before you buy. This page covers the Fuel+ Gen 2 frame in three builds: EX (145 mm rear, 150 mm front, 29er), MX (150 and 160 mm, 29 front and 27.5 rear) and LX (160 and 170 mm, 29er). It uses the TQ HPR60 drive unit; see Fazua and TQ motors explained. Its cooling fins are replaceable. Settings live in the TQ app and Trek Ride Club app.
Electrical parts on this list must match this exact model and are fitted at the external plugs or by a pro. Never open the battery, motor, display or range extender. Battery and motor service on the TQ system is dealer work: a Trek or TQ dealer reads faults with the TQ dealer service tool.
Parts list
- Tire: 29 inch front on every frame. Rear is 27.5 inch on MX builds and on size Small EX, and 29 inch on the EX and LX 29ers.
- Brake rotor: Shimano E-Rotors fit.
- Chainring: ISIS crank interface; skip oval rings of any size. In the 10T cog the chain can touch the chainstay guard.
- E-bike charger: TQ charger; the battery charges in about 3 to 4 hours on or off the bike, and the range extender in about one hour.
- E-bike battery: 580 Wh TQ battery; below 10% charge the motor output drops. TQ's battery and range extender page covers the 580 Wh pack and the range extender, which fits every frame size in a Bontrager Side Load cage with its retention strap.
- E-bike display: color display on the Fuel+ 9.8 and 9.9 and a black and white display on other builds; the two swap.
- E-bike lights: the TQ Smart Box has front, rear and 12 V aux outputs. It comes on Di2 and AXS bikes and fits others as an upgrade.
Tools for common jobs
- Hex keys: stem and pivot bolts.
- Torx keys: rotor bolts on six-bolt rotors.
- Floor pump with gauge: setting tire pressure.
- Torque wrench: pivot, axle and stem bolts, to the values on the frame.
- Chain checker: catching chain wear early.
- Chain lube: after cleaning and wet rides.
- Chain tool: fitting a new chain.
Where to buy
- TQ's battery and range extender page.
- Independent sellers: parts suppliers.
- A Trek retailer orders and fits parts for this bike: find a shop.
Common repairs
- Trek e-bike troubleshooting and TQ troubleshooting
- Set tire pressure and e-bike flat tire
- Replace disc brake pads, bed in disc brakes and clean and true brake rotors
- Clean and lube the chain and check and replace the chain
- Battery won't charge, e-bike battery care and store your battery for winter
Sources
Stuck after these checks? Find a shop near you.
If these steps didn't fix it, find a shop near you in our partner network. For battery or wiring trouble, look for shops marked Battery and electrical.
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