Scott Voltage 900 Tuned

The Voltage 900 Tuned is Scott's answer for a trail or all-mountain rider who wants electric assistance without it feeling like riding an electric bike. Rather than chasing maximum motor power, Scott has built this one around a small, light TQ system and dressed it in genuinely high-end suspension, brakes and wheels, so the bike behaves more like a very good non-assisted enduro bike that happens to help you back up the hill.

A lighter kind of assistance

At the heart of the bike is a TQ HPR60 mid-drive motor, and the number to note is 60Nm - modest by e-MTB standards, but that's deliberate. This is a pedal-dependent system: it only helps when you're pedalling, and it stops assisting once you reach 25km/h, the standard UK/EU legal limit for pedal-assist bikes. Because the motor and battery are small, the bike carries far less weight than a typical full-power e-MTB; Scott claims around 19.1kg for the tubeless build without the range extender fitted, which puts it closer to a burly analogue trail bike than to a heavy e-MTB. Scott sets the maximum system weight, covering bike, rider, kit and luggage together, at 130kg.

Battery, range extender and charging

The 900 Tuned comes with a 360Wh internal battery, and Scott includes a 160Wh range extender in the box rather than selling it as a separate accessory. Fitted together, the combined stated capacity is 520Wh, though that figure describes what the two batteries can hold rather than a promised number of miles; TQ says actual range depends on things like assistance mode, rider and luggage weight, terrain and conditions on the day, so the extender is best understood as expanding your options rather than fixing a distance. Scott says the extender can stay in place and charge there, with the internal battery charged first, and there's room in the frame for the extender and a bottle cage together, so you're not forced to choose between carrying water and carrying spare charge. A supplied TQ colour display, working over Bluetooth and ANT+ with a companion app, shows battery percentage, an estimated remaining distance and your own power output, which is a more useful way to plan a ride than trusting a single headline Wh figure.

Suspension, control and drivetrain

The Tuned build justifies its position at the top of the range through the equipment bolted to that carbon HMF frame. A FOX 36 Factory Air fork delivers 160mm of travel up front with high- and low-speed compression and rebound adjustment, matched to a FOX FLOAT X NUDE Factory EVOL shock giving 155mm out back. A TracLoc remote lets you switch the shock between Climb, Ramp Control and Descend settings on the move, and the same remote operates the dropper post, so you can manage suspension firmness and saddle height without hunting for a separate lever. Shifting comes from SRAM's wireless GX Eagle AXS Transmission, paired with a 10-52 cassette and a 34-tooth chainring, and stopping power comes from SRAM Maven Silver four-piston brakes on 200mm rotors front and rear - a genuinely enduro-grade brake for a bike meant to be pushed hard downhill. Carbon Syncros Revelstoke wheels wrapped in tubeless-ready Maxxis Assegai and Dissector tyres, both in a grippy 2.5in width, complete a build that reads like a gravity bike with a helpful motor rather than the other way round.

Which Voltage you're actually buying

Search results for this bike currently mix pages for the current HPR60 build with older reviews of a similarly named Voltage eRIDE 900 Tuned, and it's worth knowing the difference before comparing anything. That earlier bike, reviewed as the 2024 HPR50 generation, used a 50Nm TQ HPR50 motor and SRAM Code Silver Stealth brakes. The bike described here is the current HPR60 build, with a stronger 60Nm HPR60 motor and SRAM Maven Silver Stealth brakes, so don't let an older test's motor figures or brake feel colour your expectations of this one.

Sizing and geometry

Scott offers this frame in S, M, L and XL, and rather than publish a generic height chart for it, points buyers towards its own measurement-based fitting tool. What is published is a full geometry chart, and it's worth reading properly rather than guessing from a size label: head angle stays a slack, stable 63.9 degrees and seat angle a consistent 77.1 degrees across every size, while reach grows from 437.4mm on the S up to 512.7mm on the XL, with wheelbase lengthening in step. The frame also scales its cockpit hardware with size: the S gets a 140mm dropper and 15mm bar rise, the M keeps that same 15mm rise but jumps to a 180mm dropper, and the L and XL both get a 25mm rise, with dropper travel increasing further to 210mm on the XL. If you want to fine-tune handling once you've settled on a size, the stock Syncros-Acros headset allows ±0.6 degrees of head-angle adjustment, a useful bit of tuning range without needing a different frame.

Ownership

Bought new through an authorised Scott dealer, the frame and rear end carry a five-year guarantee if you register the bike within a year of purchase and keep up documented annual servicing at an authorised dealer, or three years if you don't; components themselves sit outside that guarantee. Scott's UK list price for this build is £9,599.00, which is a useful reference point for what you're comparing against, though it's a manufacturer list figure rather than a guide to what any individual retailer is actually charging when you come to buy.

One detail worth having in mind day to day is that TracLoc remote: because it handles suspension mode and dropper post together, you end up making fewer separate adjustments mid-ride, which matters more on a bike like this that's meant to be ridden hard and reset quickly between a climb and the next descent.