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On the Trek Fuel+ EX 9.8 XT Gen 2, the only power source to keep an eye on is the 580 Wh TQ battery: the Shimano XT derailleur is cable-operated, and so is the dropper post. OCLV Mountain carbon frame, TQ HPR60 motor, Fox Factory 145 / 150 mm, 10-51 cassette and four-piston XT brakes, for 20.10 kg in size M according to Trek. The Carbon Smoke/Lithium Grey Marble evokes a smoky anthracite shot through with light grey marbling.
| Frame | OCLV Mountain carbon, removable battery, adjustable head angle, adjustable progression, interchangeable alloy rocker links and lower shock mount, down tube protection, ABP, UDH, Boost |
| Motor | TQ HPR60: 60 Nm, 250 W continuous, 350 W peak |
| Battery | TQ 580 Wh, removable |
| Controls / display | TQ colour LED display with Bluetooth |
| Suspension | Fox Factory 36 GRIP X2, Float EVOL, 150 mm / Fox Factory Float X, 205 x 60 mm, 145 mm |
| Drivetrain | Mechanical Shimano XT 1x12, M8200 long-cage derailleur, XT M8200 10-51 cassette |
| Brakes | Shimano XT M8220 4-piston hydraulic, RT-6B750 200 mm rotors |
| Wheels / tyres | Bontrager Line Comp 30 / Maxxis Minion DHF MaxxGrip (front) and DHR II MaxxTerra (rear) 2.5 in, EXO+, Tubeless Ready, 27.5 rear in size S |
| Cockpit | Race Face Turbine alloy 35 mm handlebar, 40 mm rise, Bontrager Elite 45 mm stem |
| Saddle / seatpost | Verse Short Comp 145 mm / Bontrager Line Dropper 150 to 200 mm depending on size |
| Weight | 20.10 kg in size M (Trek figure, with tubeless sealant, no inner tubes) |
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At a glance
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For the rider who wants a high-end e-MTB without multiplying chargers, and who likes to head off on multi-day adventures with mechanics they know they can fix at the side of the trail.
OCLV carbon, Trek's signature. Trek moulds its OCLV frames by compressing the fibre plies under heat and pressure, leaving no voids. Its Mountain variant was developed for the stresses of off-road riding: flying stones, landings and crashes. This Fuel+ EX 9.8 XT uses it to house the motor and removable battery in a slim silhouette, backed by the Trek lifetime warranty.
| Carbon Fuel+ EX (9.7 to 9.9) | Aluminium Fuel+ EX 8 | Fuel EXe (previous generation) | |
| Level | Trek off-road carbon | Trek's most advanced alloy | First-generation lightweight e-MTB |
| Construction | OCLV Mountain | Hydroformed Alpha NEXT Platinum | TQ HPR50, 360 Wh battery |
| Reference bike | Fuel+ EX 9.8 XT: 20.10 kg (M) | Fuel+ EX 8: 21.68 kg (M) | Fuel EXe 9.7: 19.33 kg (M) |
| What it means | Fox Factory and XT on carbon | Heavier frame | Less torque and energy |
Put simply: the 9.8 XT combines Fox Factory and mechanical Shimano XT on the carbon frame, for 20.10 kg in M. It is the benchmark weight for high-end carbon Fuel+ EX models.
With a cable-operated drivetrain, nothing stops if you forget to charge: shifting still works even with a flat motor battery. On an electric bike, the chain takes the combined effort of rider and motor; checking wear at every service protects the XT chainring and cassette.
The four-piston XT M8220 brakes use mineral oil; we renew the fluid before summer, when the heat of the Béziers plain wears it out. The TQ assist cuts out at 25 km/h and stays limited to 250 W, as e-bike law requires.
| Model | Frame | Motor / battery | Rear / front travel | Weight (M) |
| Fuel+ EX 9.8 Eagle 90 | OCLV Mountain carbon | TQ HPR60 / 580 Wh | 145 / 150 mm | 20.38 kg |
| Fuel+ EX 9.8 XT | OCLV Mountain carbon | TQ HPR60 / 580 Wh | 145 / 150 mm | 20.10 kg |
| Fuel+ EX 9.8 XT Di2 | OCLV Mountain carbon | TQ HPR60 / 580 Wh | 145 / 150 mm | not disclosed |
| Fuel+ MX 9.8 XT Di2 | OCLV Mountain carbon | TQ HPR60 / 580 Wh | 150 / 160 mm | 19.79 kg |
Our take: at 20.10 kg in M, this 9.8 XT remains the carbon version with the least electronics. The 9.8 XT Di2 adds a wireless derailleur to charge; the 9.9 X0 AXS also adds the wireless dropper.
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LVR sizing advice If you are between two sizes, the shorter one makes the bike more agile on twisting singletrack, the longer one more composed in fast rock gardens. Dropper travel follows the size and the S runs a 29 / 27.5 setup.
Source: Trek size guide. Bike fitting available in our Béziers shop. |
| Which oil for the XT brakes? | Shimano mineral oil; we carry out the bleed in the workshop. |
| Can I switch to Di2 later? | Yes, by changing the derailleur and shifter; we can give you a quote. |
| Does the chain wear quickly on an e-bike? | Faster than on a conventional mountain bike; regular checks are essential. |
| Does the grey show the dirt? | The marbling helps hide dust between washes. |
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The LVR Cycles verdict The carbon Fuel+ EX for riders who want a reliable mechanical drivetrain with no extra electronics. The marbled smoky grey gives it a discreet elegance.
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Why buy from LVR Cycles? In our Béziers workshop, we monitor the wear on your chain and cassette, renew the oil in your XT brakes and carry out TQ motor diagnostics.
Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.
Data sheet
Specific References