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Uproc4 | FLYER E-Bikes

The E-Fully with particular climbing capabilities. Available with FIT.

Any terrain, whether uphill or downhill, is ideal for this All-Mountain E-Fully. Thanks to FLYER's own control unit and the FLYER display, it is straightforward to use and clearly laid out. In combination with the option of FLYER Intelligent Technology, you receive further advantages, such as the option of a two-gear motor that provides outstanding climbing capabilities. The FLYER Uproc4 with its 140 mm suspension travel has been specifically designed for all-round mountainbikers who enjoy riding on all terrains and want ultimate comfort.

Price: from EUR 3'799.00


Note "good" for FLYER Uproc4 4.10 from magazine EMTB


Product description FLYER Uproc4

The FLYER Uproc4 with its 140 mm suspension travel is your reliable companion on all terrains and is ideally suited to longer bike tours. The consistently integrated components mean that it is hard to tell at first glance that this series is an e-MTB. The Uproc4 is also incredibly easy to use thanks to the cockpit with its sophisticated display and perfect controls, which was designed by FLYER. The combination with the option of FLYER Intelligent Technology and the option of the two-gear motor provides ideal climbing capabilities when biking.  

The flat steering angle ensures that you are in complete control in any situation and provides you with an ideal sense of safety. This is supported by the wide wheels with low rolling resistance and extremely high grip. These features provide you with the necessary comfort even on rough terrain. The usual premium-quality components, combined with first-class smooth welding seams on the frame and integrated cabling, have been enhanced with further details on the FLYER Uproc4. The ideally positioned chainstay prevents the chain from touching the frame even when it is under great stress on smooth trails. The specially designed cover also provides maximum protection for the motor.



Weight without battery: about 21 kg | Permitted total weight 130 kg



Get an overview of the FLYER e-bikes' built-in components.


Frame geometries

Find out more about our framework geometries.


Rear shock and suspension fork

Setting tables for rear shock and suspension fork


Test ride and buy

Find out where you can test ride and buy FLYER e-bikes.



Information on the terms of warranty for FLYER e-bikes.


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Wheel size


Frame feature

Full suspension frame with 4-joint system (engineering & design by FLYER)

Frame material

Aluminium 6061

Frame details

Frame-integrated cable routing, derailleur gear hanger

Frame technology

Hydroformed tube set and cast motor mounting bracket and patented FLYER SIB (FIT) down tube

Frame size


Frame colour

Marble grey/Aquamarine blue
Graphite grey/Black
Slate grey/Swiss red

Pedal assist

Up to 25 km/h


Panasonic (2-gear) 36 V Multi Speed mid-engine

Assistance levels

4 assistance levels (including auto mode)

Pushing aid

Pushing aid up to 6 km/h


Shimano XT/SLX 10-speed derailleur gears, 11-36T
Shimano XT/SLX 11-speed derailleur gears, 11-42T
Shimano XT 11-speed derailleur gears, 11-42T


Magura MT5 (hydraulic) disc brakes
Shimano ZEE (hydraulic) disc brakes
Shimano Saint (hydraulic) disc brakes


432 Wh / 12 Ah / 36 V Smart Integrated Battery (SIB)


36 V Panasonic charger


FLYER D1 display

Operating console

FLYER RC1 remote


Ahead stem


Aluminium riser, 25 mm 31.8 / 780 mm


RockShox Yari RC suspension fork, 140 mm, with lockout
Fox 34 Performance Float E-Bike suspension fork, 140 mm, with lockout

Rear shock

RockShox Monarch RT (rear fork suspension travel 140 mm)
Fox Performance Float Evol (rear fork suspension travel 140 mm)

Seat post

Without suspension
Vario Kind Shock LEV Integra Remote, adjusting range 125 mm
Vario RockShox Reverb Stealth, adjusting range 125 mm


Ergon SM30 Evo, FLYER design
Fizik Gobi M7 Versus


SUNringlé Düroc 40 584 Boost complete wheel
American Classic MTB 3834 Terrain Boost complete wheel
DT Swiss XM 1501 Spline One Boost complete wheel


B&M Lumotec IQ-X LED
Supernova M99 LED
No headlight


Schwalbe Rocket Ron Performance 70-584
Schwalbe Rocket Ron SnakeSkin 70-584


MTB platform Wellgo MG6, aluminium, industrial bearings

Anti-theft protection

ABUS Plus battery lock system
ABUS Bordo 6015/90 folding lock with the same key as the Plus battery lock