Flyer Uproc X 2.10 testSporty Swiss e-bike with a trail drive

Florentin Vesenbeckh

 · 18.07.2024

Flyer Uproc X 2.10 // Bosch Performance CX // 625 Wh // 150 mm // 29/27.5 inches // 24.3 kg // 5999 euros
Photo: Max Fuchs
The new Flyer Uproc X wants to conquer the trails of the Alps with a stylish full carbon frame, super modern trail geometry and the powerful Bosch Performance CX. How does the bike perform in the cheapest equipment version for € 5999?

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In recent years, Flyer has bid farewell to its originally rather staid image. The Swiss company's e-MTBs are becoming increasingly modern, trail-orientated and more downhill-oriented. The new Uproc X with Bosch drive seems to be the (temporary?) culmination of this development. We tested the entry-level model Flyer Uproc X 2.10 for € 5999 and analysed its all-round quality.

Flyer Uproc X 2.10 - Test: How good is the entry-level model?

The new Flyer Uproc X comes with a very progressively designed chassis. The geometry could easily fit an E-Enduro. However, this is an all-mountain bike with "only" 150 millimetres of travel and mullet wheels. This brings back memories of the likewise The Swiss company's very progressive Light-E-MTB: The Uproc SL:X with Bosch Performance SX.

Flyer Uproc X 2.10 // Bosch Performance CX // 625 Wh // 150 mm // 29/27.5 inches // 24.3 kg // 5999 eurosPhoto: Max FuchsFlyer Uproc X 2.10 // Bosch Performance CX // 625 Wh // 150 mm // 29/27.5 inches // 24.3 kg // 5999 euros

Other parameters of the new Uproc X with Bosch's Performance CX remain typical Flyer: The carbon frame is well thought out and of high quality. A light can be easily clipped onto the front, which is supplied with power directly from the main battery. This works via the magnetic Monkey Link coupling with various front lights.

Not only the main frame, but also the rear triangle and linkage on the new Uproc X are made of carbon. The frame has a high-quality finish and a robust design.Photo: Georg GrieshaberNot only the main frame, but also the rear triangle and linkage on the new Uproc X are made of carbon. The frame has a high-quality finish and a robust design.

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A Monkey Link interface is located under the stem. A front light can be magnetically clicked on here, which draws power directly from the main battery.Photo: Georg GrieshaberA Monkey Link interface is located under the stem. A front light can be magnetically clicked on here, which draws power directly from the main battery.

Again, rather untypical for Flyer: the fact that there is already an E-Fully with a full carbon frame for 6000 euros. The Swiss company is less known for low prices. Logically, the entry-level model 2.10 has to make concessions in terms of equipment. It is more of an entry-level model and cannot quite keep up with the competitors in the test group. Neither the Suntour fork nor the inexpensive Rockshox shock or the groupless Shimano stoppers with unergonomic levers arouse enthusiasm. It is pleasing that the Flyer Uproc X 2.10 performs well off-road despite these shocks.

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The facts about the Flyer Uproc X 2.10

  • Motor: Bosch Perf. CX, 85 Nm max. torque
  • Battery: 625 Wh (removable)
  • Frame material: Carbon
  • Suspension travel: 150 / 150 mm
  • Wheel size: 29 / 27.5 inch
  • Frame sizes: S, M, L, XL
  • Price: 5999 Euro
  • Weight: 140 kg (test bike in size L, EMTB measurement)
  • Permissible total weight: 140 kg (manufacturer's specification)

The e-bike drive

In the entry-level model 2.10, Flyer uses the Powertube battery with 625 Wh, but the larger 750 Wh battery, which is fitted ex works in the more expensive models, is also suitable. As is typical for Bosch, the 625 Wh Powertube also delivers a very good range. The battery is secured with a bolt and is pulled downwards out of the closed down tube. This works without tools and quite smoothly - even if this form of integration makes changing the battery a little more complicated than classic folding solutions.

The current Bosch Performance CX really comes into its own on difficult climbsbecause it is powerful, has excellent modulation and accelerates lively. However, in order to unleash its full power, the rider needs to pedal a little harder than with some other electric motors, such as the Shimano EP801.

Lively, powerful, smooth: The Bosch Performance CX is an uphill artist. Too bad: It rattles downhill.Photo: Georg GrieshaberLively, powerful, smooth: The Bosch Performance CX is an uphill artist. Too bad: It rattles downhill.The Powertube battery is pulled downwards out of the down tube. This works smoothly, but is more cumbersome than classic folding solutions.Photo: Georg GrieshaberThe Powertube battery is pulled downwards out of the down tube. This works smoothly, but is more cumbersome than classic folding solutions.

Flyer goes all in with Bosch accessories. The Uproc X 2.10 comes with a wireless mini-remote, the system controller in the top tube and a Kiox 300 display to boot. This is anything but an economy programme. If you prefer a minimalist cockpit, you can simply unplug the Kiox display. The LEDs in the controller then show the battery charge level and the selected support level.

Full infotainment: In addition to the system controller in the top tube and the wireless mini-remote, a Kiox 300 is emblazoned above the stem.Photo: Georg GrieshaberFull infotainment: In addition to the system controller in the top tube and the wireless mini-remote, a Kiox 300 is emblazoned above the stem.

The geometry

Flyer has designed the new Uproc X to be particularly sporty and modern. Flat head angle, very long reach, low bottom bracket and a super steep seat angle. The long wheelbase is also striking. Values that would also look good on an enduro bike. This means the bike is ready for tough descents. Thanks to the short seat tube, the size can be selected according to the reach - to suit personal preferences. There is also a flip chip in the shock mount, which can be used to adjust the geometry slightly.

EMTB measurements at a glance (frame size L)

  • Seat tube length: 433 mm
  • Wheelbase: 1285 mm
  • Reach: 493 mm
  • Stack: 644 mm
  • Steering angle: 64 degrees
  • Seat angle: 77.5 degrees
  • Chainstay length: 448 mm

The equipment of the Flyer Uproc X 2.10

  • Fork / shock: SR Suntour Aion 36 / Rockshox Deluxe Select
  • Gear system: Shimano Cues 11-speed, 34; 11-50 teeth
  • Brakes: Shimano MT420, 203/203 mm
  • Wheels: Flyer hubs, DT Swiss H552 rims
  • Tyres: Onza Porcupine TRC, 29 x 2.4'' / GRC 27.5 x 2.6''
  • Special features: Monkey-Link mount for front light, durable Linkglide chain and cassette
A Monkey Link interface is located under the stem. A front light can be magnetically clicked on here, which draws power directly from the main battery.
Photo: Georg Grieshaber

Practical test: How the Flyer Uproc X 2.10

You can feel the progressive geometry of the new Uproc X as soon as you sit on it. The steep seat tube angle positions the rider far forward on the bike, even when the dropper post is extended. On flat terrain, there's a lot of pressure on the wrists, but on steep climbs the position really comes into its own. The Flyer climbs technical passages with great control. Motor, traction, position - everything is just right, and the Flyer is very confident on the climbs.

The Flyer climbs up technical passages with super control. Motor, traction, position - everything is just right. No other bike in the test is so confident on the climbs.Photo: Max FuchsThe Flyer climbs up technical passages with super control. Motor, traction, position - everything is just right. No other bike in the test is so confident on the climbs.

Even when the trail starts to descend, the Uproc X is still impressive. The very long reach provides plenty of room to manoeuvre and stretches the rider over the bike in a sporty manner. Thanks to its long wheelbase, the bike takes rough straights like it's on rails. The rear suspension works unobtrusively but confidently in every situation. And that despite the favourable shock absorber.

The strengths of the Flyer Uproc X clearly lie in its pedalling quality and smoothness. But the Flyer is not unwieldy to ride. It can even be pulled onto the rear wheel or into the air quite easily.Photo: Max FuchsThe strengths of the Flyer Uproc X clearly lie in its pedalling quality and smoothness. But the Flyer is not unwieldy to ride. It can even be pulled onto the rear wheel or into the air quite easily.

The Suntour fork can't quite keep up with the rear suspension, but it does a solid job. It only lacks comfort on fast hits, which quickly becomes tiring on longer descents. On the other hand, the fork dives through the stroke in a controlled manner. With other forks in the lower price segment, this often doesn't work as well and makes the ride unstable.

And even if the fork and brakes slightly dampen the downhill qualities, the bike's strengths clearly lie in its handling quality and smoothness. Nevertheless, the Flyer is not awkward to ride. It can even be pulled onto the rear wheel or into the air quite easily.

EMTB evaluation of the Flyer Uproc X 2.10

Strengths

  • Very confident climbing characteristics
  • High-quality and ultra-modern chassis
  • Sporty trail handling with a smooth ride

Weaknesses

  • Equipment quality only moderate
  • Engine rattles
The bike sets the best mark on the climbs, and is also at the forefront on the downhills. You won't find any real weaknesses, but the strengths lie in the terrain, not on easy tours.Photo: EMTB MagazinThe bike sets the best mark on the climbs, and is also at the forefront on the downhills. You won't find any real weaknesses, but the strengths lie in the terrain, not on easy tours.

The EMTB conclusion

The new Flyer Uproc X is a powerful and sporty all-mountain bike with a high level of off-road expertise. Outstanding uphill, super safe downhill. Sporty trail bikers are in the right place here. However, the favourable equipment of the entry-level model 2.10 limits the potential somewhat. - Florentin Vesenbeckh, Head of Test and Technology at EMTB Magazine
Florentin Vesenbeckh, Head of Test and Technology at EMTB MagazinePhoto: Max FuchsFlorentin Vesenbeckh, Head of Test and Technology at EMTB Magazine

Florentin Vesenbeckh has been on a mountain bike since he was ten years old. Even on his very first tour, he focussed on single trails - and even after more than 30 years in the saddle of an MTB, these are still the quintessence of biking for him. He spent his youth competing in various bike disciplines and later his cycling career was characterised by years as a riding technique coach. Professionally, the experienced test editor now focusses on e-mountainbikes. In recent years, the qualified sports scientist and trained journalist has tested over 300 bikes and more than 40 different motor systems in the laboratory and in practice.

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