Conclusion by Max Fuchs, BIKE test editor
The Stereo Hybrid ONE77 HPC Race stands out as a genuine value-for-money choice within the model range. For a relatively modest price, Cube delivers a well-rounded package that certainly holds its own against significantly more expensive rivals. The spec includes a high-traction SR Suntour suspension fork, powerful brakes with 203-millimetre discs on both wheels, and a reliable Shimano drivetrain with an XT rear derailleur. The package is rounded off by a carbon main frame – a feature that is anything but a given in this price range. Anyone looking for a long-range e-enduro for long tours and challenging trails will find the ONE77 HPC Race to be a superbly equipped bike at an exceptionally attractive price. The only upgrade we strongly recommend is higher-quality tyres with softer rubber and a more robust casing.
The Cube Stereo Hybrid ONE77 HPC Race in detail
- Intended use: Enduro / All-Mountain
- Suspension travel: 170/170 mm
- Wheel size: Mullet
- Frame material: Carbon main frame, aluminium rear triangle
- Weight of complete bike: 25.2 kg (BIKE measurement, size M, excluding pedals)
- Price: 4,299 euros
- Special features: Steering angle adjustment via headset cups, X-Connect interface
Facilities
- Motor: Bosch Performance Line CX with a maximum torque of 120 Nm, 840 watt-hour battery
- Front fork / shock absorber: SR Suntour Aion 38X 2CR Air, / SR Suntour TRIAir 2CR
- Drivetrain: Shimano XT, Shimano Deore
- Brakes: Magura Luise with 203 mm discs at the front and rear
- Seatpost: FCUBE Dropper Post, 170 mm
- Wheels: ACID SLX 30
- Tyres: Schwalbe Magic Mary and Big Betty, Performance, 2.4
The Gravity pioneer in the Cube range
With the Launch of the Stereo Hybrid ONE77 in autumn 2024 Cube opened a new chapter in its own e-MTB range. For the first time, the manufacturer opted for a ‘mullet’ wheel configuration with a 29-inch front wheel and a 27.5-inch rear wheel. At the same time, 170 millimetres of suspension travel at the front and rear set a new benchmark in the Upper Palatinate-based company’s range at the time. The ONE77 thus established itself as the brand’s most uncompromising e-enduro bike to date and was particularly well-suited to challenging enduro trails and alpine tours.
However, over the past two years, Cube has consistently developed its Gravity range further and, a year later, unveiled the new Stereo AMS Hybrid 177 models. This brings an even more uncompromising take on the electric enduro into the spotlight. Whilst the Mullet wheels and 170-millimetre suspension travel remain, the large removable battery has been replaced by a permanently integrated 600 Wh battery. This saves weight and gives the bikes an even more natural ride – characteristics that ambitious riders in particular will appreciate on challenging descents.
Degraded to a high-performance touring bike
As a result, the role of the Stereo Hybrid ONE77 within the Cube range has also evolved. Whilst the newer AMS Hybrid 177 models are uncompromisingly designed for low weight and maximum trail performance, the Stereo Hybrid ONE77 takes a different approach. The removable 800 Wh battery ensures a significantly longer range, though it does add a bit of weight. As a result, the bike now appeals primarily to riders who want to tackle long tours featuring challenging climbs and technically demanding descents. Its confident handling and generous energy reserves make the ONE77 a reliable companion for extended rides in alpine terrain.
Top pick: Stereo Hybrid ONE77 HPC Race
The Stereo Hybrid ONE77 HPC Race is the entry-level model in the range of five variants and, at a price of 4,299 euros, is by far the most affordable model in the series. Nevertheless, it shares the key design features of its more expensive siblings. The main frame is made of carbon, whilst Cube has opted for an aluminium rear triangle – a combination designed to strike a balance between stability and weight.
Power is provided by Bosch’s latest fifth-generation Performance Line CX motor. Following the most recent software update, the motor delivers a maximum torque of up to 120 Newton-metres, meaning it remains one of the most powerful motors in its class. Power is supplied by a removable Bosch PowerTube battery with a capacity of 800 watt-hours. It is securely locked in place under a robust cover in the down tube and can be removed in just a few simple steps – a practical advantage when charging at home or for storage during the winter months.
Small details, big added value
On challenging descents in particular, the geometry often determines whether a bike handles with confidence or feels playful. That’s why Cube fits the Stereo Hybrid ONE77 HPC Race with an adjustable headset as standard. This allows you to adjust the steering angle to suit your personal riding style in just a few simple steps: a flatter angle ensures extra stability and safety on steep trails, whilst a steeper setting makes the handling noticeably more direct and agile. This allows you to tailor the bike’s handling to the terrain and your personal preferences.
Another clever feature is the X-Connect system, which Cube has developed to allow for the straightforward fitting of selected Acid components. For example, a compatible front light can be attached without tools to the discreet mounting point beneath the stem. Power is supplied via a connector integrated into the headset, which is connected directly to the main battery. Plug in the light, switch it on and set off – it could hardly be any easier to integrate the lighting. This not only makes it more user-friendly, but also ensures greater safety in everyday use.
Everyday challenges
The fully integrated cable routing also contributes to a tidy overall appearance. All cables and wires are hidden away at the cockpit, near the headset, and then run invisibly through the frame. Visually, this solution is undoubtedly a success and gives the ONE77 a modern, high-quality look. However, the situation is less encouraging when it comes to ease of maintenance: anyone who regularly carries out their own maintenance will have to be prepared for a greater amount of work involved in servicing and repairs. From a practical point of view, we would therefore have liked Cube to offer a classic or at least semi-integrated cable routing as an alternative.
Another point of criticism concerns the Bosch cockpit. On the Stereo Hybrid ONE77, Cube has opted for a minimalist combination of a system controller in the top tube and a mini remote on the handlebars. The solution looks tidy and is limited to the essentials: The system controller uses five LED indicators to show the battery and assistance status, whilst the riding modes can be conveniently switched using the mini remote. However, riders who value detailed information such as speed, range or ride data whilst cycling will quickly find this minimalist setup falls short. At least Cube has thought ahead: the pre-fitted mount in the top tube allows for the straightforward retrofitting of the Bosch Kiox 400C, which provides significantly more information and integrates seamlessly into the bike.
Pros and Cons: Cube Stereo Hybrid ONE77 HPC
Pros:
- competitive price
- X-Connect offers great added value for everyday use
- A proven drive system with a long range
- Plenty of suspension travel and a solid range of features
Cons:
- Cable integration makes mechanical work more difficult
- No display capable of showing driving data
- cheap tyres
Max Fuchs
Editor