The CUBE Stereo Hybrid 140 HPC SLT Nyon is the only bike in our test to feature Bosch’s Nyon display with navigation features. Can the bike use the technology in its favour or is the huge display an unnecessary distraction on the trail? Read our review to find out.

For an overview of the test fleet head to the group test: The best eMTB of 2021 – 25 models in review

CUBE Stereo Hybrid 140 HPC SLT Nyon | Bosch Performance Line CX/625 Wh | 150/140 mm (f/r)
23.96 kg in size L | € 8,499 | Manufacturer’s website

Without a doubt, the elegant CUBE Stereo Hybrid 140 HPC SLT Nyon got the most attention during our test rides on the sun-soaked trails of Massa Vecchia. At first, the silver-black paint looks inconspicuous but comes to life in direct sunlight, shining in all colours of the rainbow – very cool! For the motor, CUBE rely on Bosch’s Performance Line CX drive, which delivers up to 85 Nm torque. The motor draws its power from an internal 625 Wh battery which is neatly integrated into the down tube of the carbon frame and protected by a sophisticated and, above all, very quiet battery cover. We would love to see the same level of integration with the speed sensor which still sits exposed on the chainstay and relies on a flimsy spoke magnet. Given that CUBE have already addressed this issue with the Stereo 160, we struggle to understand why they haven’t done the same here. The absolute highlight of our 23.96 kg test bike is the large Nyon display, which offers countless connectivity and navigation features. This bold move makes CUBE one of the trendsetters in our group test and proves that the German brand always makes an effort to respond to the needs of their customers.

The spec of the CUBE Stereo Hybrid 140 HPC SLT Nyon is almost perfect

The CUBE Stereo Hybrid 140 HPC SLT is available with a Nyon display as well as the more compact Kiox model. Given that the rest of the spec is identical, we recommend spending the extra € 250 for the Nyon-equipped build. The suspension is made up of a FOX 36 Factory GRIP2 fork and FOX DPX2 shock and generates 140 mm travel. German component manufacturer NEWMEN provide the carbon cockpit and wheels, which both suit the classy look of the CUBE. The wheels are shod in Schwalbe rubber, with a Magic Mary tire at the front and Big Betty out back, both 29 x 2.4” in the Super Trail casing. The wireless RockShox Reverb AXS dropper is superior in all respects to the mechanically activated posts installed on some much more expensive bikes in the test. Unfortunately, on our size L test bike, the dropper post only has 150 mm of travel. CUBE also rely on a wireless SRAM X01 Eagle AXS drivetrain which, in combination with the dropper, ensures a super tidy cockpit. The wireless AXS shifter and dropper remote are attached to the MAGURA MT7 brake levers via Shiftmix clamps. Unfortunately, almost all of our testers struggled to position the controls within easy reach.

Best in test
The Nyon display has already won our “Best ebike navigation system” group test. Its smart navigation and connectivity features make the CUBE the perfect touring bike.
Too short!
The RockShox Reverb AXS is superior to the mechanical droppers found on many of the more expensive bikes in test. However, the meagre 150 mm drop on the size L frame is simply not enough.
Scratching our heads
Why did CUBE integrate the speed sensor in the dropout of the Stereo Hybrid 160 but not the 140? A more robust and reliable solution seems a no brainer.

CUBE Stereo Hybrid 140 HPC SLT Nyon

€ 8,499


Motor Bosch Performance Line CX 85 Nm
Battery Bosch PowerTube 625 Wh
Display Bosch Nyon
Fork FOX 36 Factory GRIP2 150 mm
Rear Shock FOX DPX2 Factory 140 mm
Seatpost RockShox Reverb AXS 100–170 mm
Brakes MAGURA MT7 200/200 mm
Drivetrain SRAM X01 Eagle AXS 1x12
Stem CUBE Performance 60 mm
Handlebar NEWMEN ADVANCED 318.25 780 mm
Wheelset NEWMEN ADVANCED SL A.30 29"
Tires Schwalbe Magic Mary/Big Betty ADDIX Soft 2.4"

Technical Data

Size XS S M L XL
Weight 23.96 kg
Perm. total weight 135 kg
Max. payload (rider/equipment) 111 kg
Trailer approval yes
Kickstand mount no

Age-old Bosch problem
SRAM’s AXS drivetrain/dropper post combination and the tidy cable routing ensure a tidy cockpit. Only the chunky cable that connects the Nyon display and Bosch remote spoils the otherwise clean look. The cable winds around the handlebars like a vine.
Tuning tip
By using long two-finger levers on the MAGURA MT7 brakes, CUBE make it easier to reach both the brakes and shifter. Swapping the Shiftmix clamps will make for better (but still not perfect) ergonomics.
Great choice
The Schwalbe tire pairing of a Magic Mary up front and Big Betty out back, both in the Super Trail casing and ADDIX Soft Compound, perfectly suits the character of the Stereo Hybrid 140 and its area of application.

The CUBE Stereo Hybrid 140 is available in five sizes. The smallest XS model rolls on 27.5” wheels, which has shorter chainstays to suit. Our 29” size L test bike is relatively compact (457 mm reach). If you like long bikes and want to size up, you should check the seat tube length before doing so. Particularly on sizes L (470 mm) and XL (520 mm), this could result in significantly restricted freedom of movement on the bike.

Size XS S M L XL
Seat tube 345 mm 375 mm 420 mm 470 mm 520 mm
Top tube 558 mm 569 mm 590 mm 614 mm 641 mm
Head tube 105 mm 105 mm 108 mm 118 mm 138 mm
Head angle 66.0° 66.0° 66.0° 66.0° 66.0°
Seat angle 75.3° 75.2° 75.2° 75.2° 75.2°
Chainstays 448 mm 457 mm 457 mm 457 mm 457 mm
BB Drop 16 mm 36 mm 36 mm 36 mm 36 mm
Wheelbase 1,157 mm 1,185 mm 1,206 mm 1,231 mm 1,258 mm
Reach 410 mm 416 mm 436 mm 457 mm 476 mm
Stack 580 mm 614 mm 616 mm 626 mm 644 mm
Helmet Fox Speedframe Pro | Glasses 100% Glendale | Jersey Fox Indicator LE LS Jersey
Shorts Fox Ranger Shorts | Shoes Crankbrothers Stamp BOA | Socks Fox 8″ Trail

Touring king? The CUBE Stereo Hybrid 140 HPC SLT Nyon on the trail

Once you’ve sat down on the Stereo Hybrid 140 HPC SLT Nyon, you won’t want to get off. The relaxed riding position and finely-tuned suspension ensure comfort at the highest level. While the Moustache with its Purion display is just as comfortable, the CUBE’s Nyon display gives the German bike bonus points. Whether you’re riding unknown trails, crossing the Alps or commuting to work in the concrete jungle, the display provides reliable navigation and other crucial data such as the battery’s remaining range. With its brilliant E-Live Valve suspension, the SIMPLON is the only worthy opponent in this test. The CUBE Stereo Hybrid 140 HPC SLT Nyon is the perfect companion for tourers who want to explore unknown terrain and take it easy on the trail!

The spec, comfort and handling of the CUBE Stereo Hybrid 140 HPC SLT Nyon are perfect for touring riders! However, for challenging trails there are better bikes in this test.

Only on steep gravel ramps and winding climbs does the relaxed riding position show its downsides. Particularly riders with long legs are positioned far back over the rear wheel and have to actively shift their weight forward to keep the front wheel tracking. When negotiating steps and ledges, the Bike sits higher in its travel than the burlier 160 mm version. However, the suspension bobs, bringing the Stereo Hybrid 140 to a halt at technical cruxes.

Tuning tips: swap the right and left MAGURA Shiftmix clamps (this improves things but doesn’t completely solve the problem) | riders with long legs should push the saddle all the way forward

Downhill, the CUBE Stereo Hybrid 140 impresses with its good-natured and intuitive handling which is particularly well-suited to beginners. In open corners, the compact frame and long 60 mm stem ensure balanced weight distribution. In combination with the grippy tires and sensitive suspension, you’ll have plenty of grip without having to shift your weight around much. The CUBE overcomes obstacles with lots of traction, albeit at moderate speeds. Get faster and the compact Stereo Hybrid 140 feels twitchy and prompts you to slow down again. For an aggressive riding style, the suspension lacks support and doesn’t provide sufficient reserves, harshly blowing through its travel even with small drops and obstacles.

Riding Characteristics



  1. sluggish
  2. playful


  1. nervous
  2. stable


  1. demanding
  2. balanced

Riding fun

  1. boring
  2. lively

Motor feeling

  1. digital
  2. natural

Motor power

  1. weak
  2. strong

Value for money

  1. poor
  2. top


Forest road


Flow trail uphill


Flow trail downhill


Technical single trail uphill


Technical single trail downhill


Downhill tracks



If we were looking for the perfect touring bike, the CUBE Stereo Hybrid 140 HPC SLT Nyon could emerge as the winner of this group test. The spec, comfort, Nyon display and above all, the good-natured character of the bike are a perfect match for its intended use. However, on the trail, the bike struggles to keep up with many of its competitors, both uphill and downhill. With such a clearly defined area of application, it simply doesn’t have what it takes to come out on top as the best all-rounder.


  • outstanding long-distance comfort
  • killer look
  • spec suits the purpose
  • Nyon display with navigation


  • outstanding long-distance comfort
  • killer look
  • spec suits the purpose
  • Nyon display with navigation

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The test field

For an overview of the test fleet head to the group test: The best eMTB of 2021 – 25 models in review

All bikes in test: Cannondale Moterra Neo Carbon 1 (Click for review) | Canyon Spectral:ON CF 9 (Click for review) | CENTURION No Pogo F3600i (Click for review) | CUBE Stereo Hybrid 140 HPC SLT Nyon | CUBE Stereo Hybrid 160 C:62 SLT Kiox (Click for review) | Ducati TK-01 RR (Click for review) | FLYER Uproc6 9.50 (Click for review) | FOCUS JAM² 6.9 NINE (Click for review) | GIANT Trance X E+ 1 (Click for review) | Haibike AllMtn 7 (Click for review) | KTM Macina Kapoho Prestige (Click for review) | Lapierre Overvolt GLP 2 Team (Click for review) | MERIDA eONE-SIXTY 10K (Click for review) | Mondraker Crafty Carbon XR (Click for review) | Moustache Samedi 29 Trail 8 (Click for review) | ROTWILD R.X375 ULTRA (Click for review) | Santa Cruz Bullit X01 RSV Air (Click for review) | SCOTT Ransom eRIDE 910 (Click for review) | SIMPLON Rapcon PMAX (Click for review) | Specialized S-Works Turbo Levo (Click for review) | Specialized S-Works Turbo Levo SL (Click for review) | STEVENS E-Inception AM 9.7 GTF (Click for review) | Thömus Lightrider E2 Pro (Click for review) | Trek Rail 9.9 X01 (Click for review) | Whyte E-150 RS 29ER V1 (Click for review)

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Words: Photos: Various