The power to the 26-inch rear wheel is provided by the XTR drivetrain. For agile handling, the Flyer engineers deliberately opted for a small rear wheel. At the front, a 27.5 wheel ensures better rollover behavior. For the rolling stock of the Uproc 6, Flyer chose the stable and race-tested 1501 Spline EX wheels from DT Swiss. This E-Enduro is also heavily specified in other respects.

The riding position of the Flyer Uproc is central and comfortable, but with a pinch of sportiness. This makes it pleasant to ride straight ahead and uphill. Even in Eco mode, the Bosch drive pushes well, albeit at a leisurely pace. When it gets steeper, it soon becomes more pleasant to ride in Tour mode. However, it is noticeable that the Bosch motor only really comes into its own at cadences from around 70 rpm. If you want to set off from a standstill in a heavy gear, this remains strict. It is therefore also important to select the correct starting gear and Eco or Tour mode.

In off-road terrain and depending on the passage and steepness, it is also advisable not to ride at full power. The propulsion in turbo mode is so strong that it cannot tolerate any wrong maneuvers. So you need to learn how to handle this fast gun. In addition, the battery does not last forever in the upper levels: after 60 minutes and 600 meters of steep ascent in Sport mode, it is empty. The lowest modes are more efficient for touring.
Riding uphill on rooted, steeper trails is also more difficult than expected. One reason for this is probably the smaller rear wheel, which tends to push the center of gravity back a little. Although the battery should also distribute the weight to the front wheel, the front seems relatively light, which is why the bike jacks up unusually early in such terrain. However, we are clearly talking about technically demanding climbs here.
Once you get used to this peculiarity and find the right pedalling rhythm, climbs that you previously did on foot suddenly become possible.

Downhill, the Uproc 6 rides very maneuverably for a bike weighing 22 kilograms. Even hairpin bends can be ridden quite well with this E-Enduro bike, although the handling is clearly different from that of a non-motorized bike. It drags a little when changing direction quickly, but this is due to the overall weight and the very smooth ride. The latter in turn comes in handy on fast descents.
Flyer has done a great job with the suspension, which irons out a lot, responds finely and still has the necessary progression. Rough descents are therefore easily manageable, but should still be enjoyed with caution. As there is a lot of weight on the rear wheel, it is easy to puncture the rim. Here you should certainly increase the tire pressure a little. However, you have to be more conscious when taking the weight off the rear wheel and the bunny hop also requires different timing.

Conclusion: The "Uproc 6 8.90" comes very close to the enduro feeling. Only in this case, riding uphill is almost more fun than riding downhill, as the 350 watts of maximum support power make it possible to tackle climbs that you would otherwise like to push. How you use this bike is ultimately up to you, but one thing is clear to us: you need to learn how to handle this much power.

Specifications

Manufacturer: www.flyer-emtb.com

Photos© Philipp Ruggli