Trek Fuel EXe 9.7

A proper trail bike with a helpful nudge

The Trek Fuel EXe 9.7 is for mountain bikers who want the climb to take less out of their legs without turning every ascent into a full-power e-MTB charge. Its carbon chassis, 150 mm front and 140 mm rear travel, 50 Nm TQ-HPR50 motor and removable 360 Wh battery make a persuasive package for trail-centre loops, technical woodland riding and longer off-road days. With an original UK RRP of £6,000, it sits as the value-focused carbon option in the current Fuel EXe range.

This is a light-assist e-MTB, not a high-torque uplift substitute. The motor offers meaningful, quiet support but still rewards a rider who is prepared to pedal with purpose, particularly on steeper climbs. Assistance stops at 15.5 mph, as it does on other UK-compliant pedelecs, so the Fuel EXe retains the familiar rhythm of an assisted trail bike rather than delivering a forceful surge every time the gradient rises.

Trek Fuel EXe 9.7 prices and current UK offers

Live offer cards show the current prices separately. The current UK model uses a Shimano SLX/XT build, but it is worth comparing the displayed size and fitted equipment as well as the price. Forks, shocks, wheels, saddles, handlebars and droppers can be substituted between offers, and those parts make a real difference to setup and value.

The published 19.33 kg weight applies to a size M fitted with tubeless sealant and no inner tubes. It is a useful guide to the listed build, rather than a promise for every frame size or every offer with substituted components.

The current carbon Fuel EXe platform

Trek continues to list the original carbon Fuel EXe platform under the unchanged Fuel EXe 9.7 name. The newer Fuel+ models are a separate family, so their higher-output systems and specifications do not belong in this bike's description. Here, the focus remains a carbon light-assist trail bike with a discreetly integrated system and a battery you can remove for charging, servicing or transport planning.

All stock sizes use 29-inch wheels and are supplied in the Low Mino Link position. The link can be moved to High, steepening the angles by 0.5 degrees and lifting the bottom bracket by 7 mm. Low suits riders prioritising descending confidence, while High offers a little more pedal clearance and a slightly sharper feel on slower, tighter trails.

Carbon frame, calm power delivery and lively trail manners

The OCLV Mountain Carbon frame combines internal routing, an alloy rocker link, Active Braking Pivot and Trek's Mino Link adjustment. Trek says the Active Braking Pivot is designed to keep the rear suspension working more consistently under braking. Alongside the 150 mm fork and 140 mm rear travel, it gives the Fuel EXe the foundations for rough, technical trail riding rather than merely smoothing out a towpath commute.

Where the bike stands apart is its rider-led feel. The TQ-HPR50 is designed to add support predictably rather than dominate the ride, while its low noise helps preserve the quieter side of a woodland loop. Independent tests of this platform found the assistance natural and predictable on technical climbs, with a lively, sure-footed chassis when pointed downhill. You still need to choose your line and put in the work, but the bike can make another lap feel tempting rather than ambitious.

The current Shimano SLX/XT build keeps shifting familiar with mechanical 12-speed controls, a 10-51T cassette and an XT rear derailleur. Four-piston Shimano brakes with 203 mm rotors front and rear give the build the stopping hardware expected of a bike intended for sustained trail descents. The supplied wheels and tyres are tubeless-ready and arrive with the strips, valves and sealant needed to run tubeless from the outset.

Living with the Fuel EXe 9.7 in the UK

Trek gives a broad planning estimate of 2 to 5 hours from the 360 Wh battery. Your result will vary with rider weight, temperature, tyre condition, assistance mode and how much climbing is on the route. That capacity suits a committed ride with active pedalling, but riders planning big days in higher assistance modes should budget for the optional 160 Wh TQ Range Extender. It adds approximately 40% extra range, but requires a power cable, cable guide, retention strap and compatible bottle cage. It also adds 900 g and takes the frame's bottle position.

The main battery is removable for off-bike charging and easier servicing. If you ride with it removed, reinstall the battery cover first. Trek Central app connectivity, Bluetooth and ANT+ support make the system easy to live with, while diagnostics, firmware work and any integrated-light installation need a Trek or TQ-equipped workshop.

Wet UK riding rewards a little routine care. Keep the supplied sealant fresh, inspect the drivetrain after muddy rides and include the suspension pivots and brakes in regular servicing. MBR's exact-model test found the stock XR5 tyres lacked traction in its wet test conditions, so a grippier front tyre is a sensible change for riders spending plenty of time on slippery roots and softer ground.

There is room to tune the bike as your riding develops. Trek supports a compatible 160 mm single-crown fork, although it alters front-end height and geometry and may need headset service parts or a brake adaptor. Compatible air and coil rear-shock options are possible with the correct hardware and full-compression clearance checked. A dealer-installed HPR60 conversion can raise torque to 60 Nm, but it needs programming and workshop labour, while Fuel EXe firmware still limits peak mechanical power to 300 W. It is a focused upgrade, not a route to full-power e-MTB output.

The frame has a bottle mount on every size, although the S takes a maximum 590 ml bottle. There are no rack, full mudguard, kickstand or dedicated light mounts, so this is happiest as a trail companion rather than an everyday load carrier.