Bike Cube Stereo: A comprehensive review of the flagship E-MTB series

The Cube Stereo E-MTB series impresses with outstanding riding dynamics, modern technology, and high everyday utility. The latest models, such as the Hybrid One44 TM, offer innovative features: a damper positioned horizontally under the top tube, adjustable geometry, a powerful Bosch Performance Line CX motor with 85 Nm, and an 800 Wh battery ensure a light, agile, and enduring riding experience. Experts praise the balanced chassis, range, and price-performance ratio.

The popularity of the bike cube stereo series is reflected in current market analyses:

• Cube holds a market share of 26% in the German e-bike segment.

• In 2022, Cube was voted the most popular e-bike brand.

• Average of 4.6 stars for customer satisfaction.

• Cube is among the five largest bicycle manufacturers worldwide.

The series is aimed at various user groups, offering suitable solutions for both beginners and professionals.

Key Findings

• The Cube Stereo E-MTB series offers strong motor performance, long range, and versatile equipment for beginners and pros alike.

• The Bosch Performance Line CX motor with 85 Nm provides powerful assistance, especially on steep climbs and technical sections.

• The models impress with balanced handling, good traction, and comfortable suspension for various types of terrain.

• Cube uses high-quality materials like carbon and aluminum, which ensure light weight and stable frames.

• The price-performance ratio is excellent, with attractive models for various budgets and areas of application.

Test Results

Overall Verdict

The Cube Stereo E-MTB series convinces in independent tests with very good ratings. The models consistently achieve high scores and receive awards for their versatility and quality. In particular, the Cube Stereo Hybrid 140 TM was able to achieve a test victory in the EMTB test by bike-magazin.de. The bike prevailed against the competition as a comfortable all-rounder, thus underscoring the high quality of the entire series.

The overall average grade for all Cube e-bikes from various independent tests is 1.3. This rating reflects the strong performance, optimal equipment, and reliability of the Bosch drive components. Weaknesses appear only occasionally and usually concern minor details.

An overview of the most important test results:

• Cube Stereo Hybrid One55 TM: 8.6 points ("very good"), praised for weight, equipment, removable battery, and performance at high speed. Criticisms include the rattling ride and demanding handling.

• Cube Stereo Hybrid 140 HPC Race 750: 8.22 points ("very good"), convinces through balanced handling, versatility, straightforward operation, and high range.

• The bike cube stereo models regularly receive praise for their lively handling and high-quality equipment.

Handling

The handling of the Cube Stereo E-MTBs is described as very well-executed in trade magazines and test reports. The bikes offer a balanced mix of control, traction, and riding pleasure. They show their strengths particularly in the uphill sector. The Bosch Performance CX motor with 85 Nm provides direct and powerful support, which can be adjusted individually in four modes. The Tour+ mode offers flexible support that adapts to the riding style.

The handling of the bike cube stereo models is considered good. Ergonomic handlebars and a solid frame geometry ensure safety and comfort. The relatively high weight can be perceived as a disadvantage during transport or in tight turns. Compared to other E-MTBs, however, the series offers an attractive price-performance ratio and is particularly aimed at touring riders and advanced bikers. Small weaknesses such as tubeless-ready rims that are not immediately ready for use or unprotected cables occur only rarely and hardly affect the overall experience.

Bike cube stereo models

Overview

The current bike cube stereo series includes a wide selection of e-mountain bikes for various areas of application. The most important models include:

• Stereo Hybrid 120 Race Allroad: A versatile touring E-MTB with 120 mm travel, ideal for longer distances and everyday rides.

• Stereo Hybrid 140 SLX 750: A trail bike with 140 mm travel and a large 750 Wh battery, suitable for demanding tours and trails.

• Stereo Hybrid 140 HPC ABS 750: This model offers an innovative anti-lock braking system (ABS) for more safety and control on technical descents.

• Stereo Hybrid ONE44 TM: A sporty trail bike with modern geometry, modular battery choice (600 or 800 Wh), and a lighter frame.

• AMS Hybrid ONE44 C:68X Race: The top model with a carbon frame, high-end components, and maximum performance for ambitious riders.

The bike cube stereo models cover a broad spectrum – from the comfortable all-rounder to the high-end trail and enduro bike.

Tip: The model names provide clues to the suspension travel (e.g., 120, 140, 160, 170 mm) and thus to the main area of use.

An overview of the most important models, their equipment, and prices is shown in the following table:

Differences

The bike cube stereo models differ primarily in suspension travel, motorization, battery capacity, and equipment. The most important differences at a glance:

• Suspension travel and application area:

  • Models like the Stereo Hybrid 120 are suitable for tours and everyday use.

  • The ONE44 and 140 models offer more travel for trails and sporty terrain.

  • The ONE77 and 160 models are aimed at enduro fans and riders looking for maximum reserves in downhill.

• Motor and battery:

  • All models rely on the Bosch Performance Line CX motor with 85 Nm torque.

  • The battery capacity varies depending on model and equipment between 600, 625, 750, and 800 Wh.

  • Higher-end models like the AMS Hybrid ONE44 C:68X Race feature the largest battery for maximum range.

• Frame and components:

  • The series offers aluminum and carbon frames.

  • High-end models combine a carbon front triangle with an aluminum rear for optimal stiffness and weight.

  • The equipment ranges from Shimano Deore/XT to SRAM 12-speed, with Fox or RockShox suspension and hydraulic disc brakes from Magura or Shimano.

• Design and innovations:

  • All models feature an ergonomic, sporty design and integrated cable management.

  • Features like the X-Connect interface allow for rapid retrofitting of lighting systems.

  • Dropper seat posts are installed as standard.

The bike cube stereo series thus offers the right model for every requirement. Beginners benefit from solid technology and simple operation. Advanced riders and pros will find high-end components and innovative features for maximum performance on any trail.

Equipment

Motor & Battery

Cube relies on the latest generation Bosch Performance Line CX motor for its Stereo E-MTB series. This motor delivers a maximum torque of 85 Nm and impresses with its precise, powerful assistance. Riders can choose between several assistance modes: Eco, Tour+, eMTB, and Turbo. The ergonomic LED Remote control module allows for quick mode switching while riding. The motor shows its strengths especially on steep climbs and in technical sections. Experts praise the sporty, reliable performance and the natural riding feel. The motor operates quieter and lighter than previous versions while remaining just as powerful.

The batteries of the Cube Stereo models are fully integrated into the frame and offer a capacity of 600, 750, or 800 Wh, depending on the model. High-end models like the AMS Hybrid ONE44 C:68X Race come with the new Powertube 800, which is 700 grams lighter than the 750 Wh battery. The batteries are easy to remove and can be secured with a key. They offer high range and long runtimes, which is particularly advantageous on extended tours. The integration protects the battery from dirt and impacts. Another plus: the batteries are interchangeable without adapters and are lockable.

Tip: The Turbo mode delivers maximum power but can cause the front wheel to lift. Beginners should gradually get used to the high performance.

Frame & Craftsmanship

For the top models in the Stereo series, Cube uses the innovative C:68X® Carbon. This material contains nanoparticles in the resin and ensures extremely low weight with high stiffness. The frame of the Stereo ONE77, for example, weighs only about 2.3 kilograms. The Advanced Twin Mold manufacturing technology positions every carbon fiber precisely. This creates an especially light and stable chassis that remains reliable even under high stress.

The frame construction consciously avoids integrated storage space to keep the weight low. However, a mount for a trail tool is provided. The thru-axle concept with Boost 148 ensures stiffer wheels and better handling. Riders can individually adjust the geometry: bearing shells in the head tube and a flip-chip allow for fine-tuning of the steering angle and suspension. These features make the Cube Stereo E-MTBs robust, versatile companions on every trail.

Price

Price-Performance

Cube Stereo E-MTBs offer a very good price-performance ratio. Specialist magazines particularly praise the Stereo Hybrid 140 HPC model. It is among the most affordable bikes in comparative tests and impresses with well-thought-out equipment. The frame is balanced, the suspension works reliably, and the brakes offer plenty of safety. Users report high satisfaction because the bike combines comfort and sportiness.

MOUNTAINBIKE Magazine awards a price/performance tip to the Stereo Hybrid ONE44 HPC Race. The combination of a modern carbon frame, Bosch CX motor, and powerful battery convinces many testers. A price of around 4,500 euros is considered fair, especially in comparison to other brands. BIKE Magazine also highlights the climbing characteristics and the agile suspension. The bike is suitable for beginners and advanced riders who value quality and a consistent overall concept.

Tip: Anyone looking for an E-MTB with modern technology and solid equipment will find an attractive offer from Cube.

Market Comparison

Cube positions itself in the mid-to-upper price segment. Prices range from about 3,499 euros for the entry-level model to over 8,000 euros for high-end variants. Compared to brands like Haibike or Conway, Cube remains competitive. The Stereo Hybrid 120 Race 625 costs 4,299 euros, placing it below the Conway eWME 4.9 (4,500 euros) and the Centurion No Pogo (4,399 euros). Cube offers solid equipment here, even if the suspension travel is slightly lower.

The following table shows the price range of the main Cube Stereo models:

The price development shows a clear trend: new models are becoming more expensive, while used bikes lose value over the years. The following diagram illustrates the trend in used prices from 2018 to 2024:

New models like the Cube Stereo Hybrid ONE22 Pro 600 (2025) start at approximately 3,499 euros. Prices for top models rise to over 8,000 euros. Cube remains price-attractive and offers suitable solutions for various budgets.

Strengths & Weaknesses

Advantages

Cube Stereo E-MTBs offer numerous strengths that are repeatedly highlighted in test reports and user reviews:

• Very responsive e-assistance that is particularly impressive on climbs and technical sections

• Impressive range due to the 750 Wh Bosch PowerTube battery, which is integrated into the frame and well-protected

• Good price-performance ratio compared to other brands

• Comfortable suspension with Fox 34 suspension fork and Fox DPS shock, which effectively absorbs bumps

• Solid and reliable braking performance thanks to Magura MT30 four-piston disc brakes

• High-quality craftsmanship with a robust frame and protected cables

• Ergonomic handlebar that can be locked, increasing safety

• Powerful Bosch Performance Line CX motor with various assistance modes for different requirements

• Everyday-suitable equipment, such as luggage racks and versatile mounting options

• Precise Shimano XT 12-speed drivetrain for optimal gear ratios and agile handling

Experts praise the technical innovations of the Cube Stereo series. The light and stiff C:68X carbon frame ensures optimal power transmission and control. The progressive geometry and mountain-oriented suspension offer exceptional handling. Riders benefit from an adjustable head angle, longer reach, and 150 mm of travel at the rear. These features enable confident riding on demanding trails and at high speeds. Internally routed cables and an integrated Bosch controller with Bluetooth increase comfort and ease of maintenance.

Criticisms

Despite many advantages, independent tests and customer reviews also reveal some weaknesses of Cube Stereo E-MTBs:

• The frames, especially those made from C62 material, are considered less stiff and are described as "soft"

• The rear triangles exhibit a linear characteristic curve, which limits performance on demanding trails

• The geometry often remains conservative, as Cube pursues long product life cycles

• Users report creaking and cracking noises from the frame and rear triangle, indicating quality defects

• Technical issues like loose bolts on the brake disc, residual air in the brakes, or incorrect tube sizes occur occasionally

• Multiple workshop visits are necessary for some models, for example, to replace the rocker, main frame, or fork

• Performance is rated by some testers as "nice, nothing more," especially in comparison to competitor brands

• Long-term reliability remains somewhat unclear, as wear parts such as the chain, shock, and fork require regular maintenance

Note: Those who value maximum frame stiffness and innovative geometry should carefully weigh their model choice. Regular maintenance increases durability and minimizes technical issues.

Target Groups

Beginners

Cube Stereo E-MTBs offer an ideal entry into the world of electric mountain bikes. The models are characterized by intuitive operation and balanced handling. Beginners benefit from well-thought-out geometry and tuned suspension, which allow for precise control on any terrain. The bikes provide a dynamic riding experience and offer safety on trails and in everyday life.

• Agile riding style ensures a dynamic experience on various terrains.

• Well-thought-out geometry and tuned suspension allow for precise control.

• Robust frames ensure high stability even on demanding trails.

• Optimal tire grip ensures safe traction on climbs and descents.

• Intuitive operation and balanced handling make it easier for beginners to get into mountain biking.

• Efficient power transmission allows for energy-saving and dynamic off-road movement.

These properties make the Cube Stereo series particularly attractive for those who want to gain their first experience in the E-MTB sector. The solid equipment and high-quality craftsmanship offer safety and comfort, even when the terrain becomes more challenging.

Advanced & Pros

Advanced riders and professionals appreciate the relaxed seating position and the sensitively responding suspension of Cube Stereo E-MTBs. The large Bosch Nyon display with navigation functions supports touring riders who want to explore new routes. The motor integration and high-quality frame details are impressive off-road. The models offer various suspension travels from 120 to 160 mm, tuned for different requirements. High-quality carbon frames ensure low weight and high stiffness. The bikes combine versatility, innovative technology, and excellent craftsmanship.

In professional comparative tests, Cube Stereo Hybrid models regularly achieve top positions. They impress with strong suspension, stable riding characteristics, and quiet motor operation. The efficient battery systems and electronic shifting offer comfort and performance on demanding trails. These features make Cube Stereo E-MTBs a preferred choice for sporty and demanding riders.

The Cube Stereo series impresses with strong motor performance, high range, and versatile equipment. It is particularly aimed at sporty mountain bikers who prefer long tours on demanding trails or fast descents. The models offer convenient battery removal and high-quality components. If you are looking for a capable E-MTB for technical routes and bike park days, the bike cube stereo is a reliable choice. The series motivates riders to discover new paths and further develop their skills.

FAQ

How long does the battery of a Cube Stereo E-MTB last?

Battery life depends on the model, terrain, and riding style. On average, a Cube Stereo E-MTB with a 750 Wh battery achieves a range of 60 to 120 kilometers. Riders benefit from efficient energy management and can easily remove and charge the battery.

Is the Cube Stereo E-MTB suitable for beginners?

Yes, Cube develops the Stereo series for beginners as well. The bikes offer intuitive operation, stable frames, and balanced geometry. Beginners experience a safe riding feeling on various surfaces and benefit from the reliable motor assistance.

What maintenance does a Cube Stereo E-MTB require?

Regular maintenance includes checking the chain, brakes, and tires. The motor and battery require little care. Cube recommends having the bike checked annually in a specialist workshop. A clean chain and correct tire pressure increase the lifespan.

Is there a warranty on Cube Stereo E-MTBs?

Cube provides a six-year warranty on frames and rigid forks. A two-year manufacturer's warranty applies to the motor, battery, and electronic components. Customers should check the warranty conditions upon purchase.

Tip: Registering on the Cube website extends the warranty for certain models.