Scott Lumen 900

The Scott Lumen 900 is built for riders who already love how a proper trail bike handles and want a motor that supports that feel rather than dominating it. It pairs a carbon HMX frame, an integrated rear shock and a modest but capable TQ motor, aimed squarely at cross-country, marathon and downcountry riding rather than shuttle-lap enduro descents. If you want a machine that climbs efficiently, corners with the poise of an unassisted trail bike, and only reveals its motor when you actually need a hand, this is a considered take on that idea.

Motor and battery: how the assistance actually works

At the heart of the newer Lumen 900 is a TQ HPR60 mid-drive motor, rated at up to 60Nm of torque. That is meaningfully less punchy than the full-power e-MTBs many riders default to, and that is rather the point: it is tuned to add a natural boost to your own pedalling rather than take over the job. Power comes from a 360Wh battery built into the frame, and Scott includes a 160Wh range extender as standard, giving a combined 520Wh when both are fitted. That is a genuinely useful amount of energy for longer days out, though Scott does not publish a fixed real-world mileage figure for this build, so any distance claim you see elsewhere depends heavily on terrain, mode and rider effort. A TQ display with Bluetooth, ANT+ and a dedicated smartphone app lets you keep an eye on remaining charge and tweak support as you ride.

Independent testing of the HPR60 motor on a different bicycle found it delivers assistance that feels natural on moderate climbs, with noticeably less help on steep, technical steps. That is a useful thing to know about the motor itself, rather than a verdict on how the complete Lumen 900 rides, since the frame, geometry and suspension all play their part too.

Suspension and TwinLoc: travel for downcountry trails, not downhill runs

Up front sits a Fox 36SL Performance Elite Grip SL fork with 140mm of travel, matched to 130mm out back through Scott's integrated Fox Nude 6 EVOL Trunnion shock. That is a downcountry-leaning travel split: enough cushioning to keep the bike composed on rough, technical singletrack, without the extra weight and slacker geometry of a longer-travel enduro bike. TwinLoc lets you switch the rear shock between Lockout, Traction Control and Descend from the bars, so you can firm things up for a smooth climb and open everything back up the moment the trail points down. Scott rates the bike under its usage condition 3, which covers technical rough trails but specifically allows jumps and drops of less than 60cm; it is not the brand's downhill-use classification, so riders looking for a bike built around bigger drops and repeated bike-park laps should look elsewhere in Scott's range.

Drivetrain, brakes and rolling stock

Shifting comes from a wireless SRAM GX Eagle AXS Transmission, a 12-speed setup with a 10-52T cassette that removes derailleur cables from the equation entirely and tends to hold its indexing well over rough terrain. Stopping power comes from SRAM Motive Silver four-piston brakes with 180mm rotors front and rear, a sensible size for a bike that will see genuine descending rather than just fire-road climbing. The Syncros Silverton 1.5-30 wheelset and Schwalbe Wicked Will EVO TLE tyres in a 29 x 2.40 size are tubeless-ready, and Scott lists sealant among the supplied accessories, but the specification does not confirm the bike leaves the factory already set up tubeless. It is worth checking this on delivery rather than assuming a tubeless-ready label means a tubeless-ready bike straight out of the box. The fitted Syncros SP-M300-AL2 dropper post uses a 31.6mm diameter and offers +RAD drop adjustment, though Scott's UK specification does not break travel down by frame size, so it is worth confirming actual drop for your chosen size before committing.

Two HPR60 builds and an older namesake: which Lumen 900 is which

Search results for the Lumen 900 currently throw up more than one build, and price alone will not tell you which one you are looking at. Scott's newer HPR60 build, retailer-labelled 2027, carries an official UK RRP of £8,999.00 and comes with the Syncros SP-M300-AL2 dropper described above. An earlier HPR60 build, retailer-labelled 2026, was listed at £8,699.00 and instead fitted a Syncros Duncan Dropper Post 1.5S. Both share the same 360Wh internal battery and included 160Wh extender, but their claimed weights are not directly comparable: the earlier build's 17.00kg figure specifically excludes the range extender and assumes a tubeless setup, while the newer build's approximately 18.2kg claim comes with no stated weighing condition at all. If you are choosing between the two based on weight, that difference in how the number was arrived at matters more than the number itself. Separately, an older 'Lumen eRIDE 900' sometimes appears alongside Lumen 900 listings; it is a distinctly different bike, built around a TQ HPR50 motor rated at 50Nm, 130mm of travel front and rear, and SRAM Level Silver brakes, so its specification should not be mistaken for either HPR60 build.

Sizing, load limits and looking after the bike

Scott offers the Lumen 900 in S, M, L and XL and points buyers to its own measurement-based fitting tool, but the accessible UK specification does not publish numerical height or inseam bands for any of those sizes, so anyone sizing up online is working from Scott's fit tool rather than a simple ruler-based chart. What is published clearly is the bike's 130kg maximum system weight, a combined limit covering the bike, rider, kit and any luggage together, not a 130kg rider weight limit on its own; it is worth keeping that distinction in mind if you regularly ride with a loaded pack or carry extra gear.

Scott's frame and rear-end guarantee runs for five years, but only if you register as the first owner within a year of purchase and keep the bike serviced annually by an authorised Scott dealer; skip that servicing and the term falls back to three years, and components themselves are excluded from the guarantee regardless. Given the cost of a carbon e-MTB frame, that is worth building into your ownership plan from day one rather than treating it as small print. The included range extender is arguably the more immediately useful piece of that ownership picture: rather than needing an aftermarket battery upgrade to stretch a big day out, it is already part of the box contents, ready to bolt on when the ride calls for it.