Opia 2.0 Series Special

The LG powered Dillenger Opia is now in its second design iteration. Improvements include a new safety lock design for front handlebar folding, front and rear mudguards, integrated rear rack with light and all terrain tires to suit any riding conditions. For commuters who want to get to work in a hurry and also need to handle the bike whilst folded away, this is the top of the line in lightweight folding electric bikes. Thanks to advances in battery-integrated frame design, the Opia weighs in at a mere 18kg which is around 6kg lighter than the competition. At such a light weight, you can fold this e-bike down into a manageable size and carry it without breaking your back. In terms of practicality, this is a significant leap forward. The boundary to adopting electric bikes from as recent as last year has been the problem of weight. For those looking for one of the lightest electric bikes on the market backed by an excellent warranty, the Dillenger Opia is a great choice.

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Regular Price: £1,199.00

Special Price £699.00


Product Description


Lightweight without compromise

The Opia is one of the lightest electric bikes in the world. Thankfully this hasn't resulted in any compromise. The 36V Lithium-ion battery contains 280Wh of energy which, combined with the very efficient road tyres, will deliver an impressive range of up to 60km on medium level pedal assist. The power is also without compromise. The 250W high torque geared motor hub is borrowed from our most popular conversion kit (Samsung Street) and delivers an astonishingly large amount of torque which feels impressive on such a lightweight electric bike.

Stealthy electronics

If you're worried about your coworkers giving you a hard time about 'taking the easy route' by going electric, they will probably have a hard time believing that your new bike is electric assisted. With the frame-integrated battery completely concealed, no visible charge ports, rear hub motor hidden in the back wheel, the Opia is disguising itself as a normal bicycle to the untrained eye! There is also a practical purpose to the clever concealment. The electronics are protected inside the frame and rubber seals and grommets protect the important parts against the most inconvenient deluge.

Industry leading warranty and support

The Opia is backed by one of the best warranties in the industry, from a company that has been around for a long time. 10 year frame warranty, 1-year full warranty on motor, display and controller and 1-year full warranty on the Lithium-ion battery and charger (not pro rata, like some other brands). This is one of the most comprehensive warranties available for an e-bike. When you ride your bike every day, you want to know that should something unexpected occur, you're well and truly covered.

Materials and components

The Dillenger Opia is assembled with quality components that will last. The frame is made from a high strength aluminium alloy which is covered by a 10 year warranty. The motor, controller, LG battery cells, display, wiring harness and charger are all borrowed from our bank of highly reliably e-bike components that feature on most of our products. The handlebar and frame folding joints feature redundant safety latches, in the event that one of these is bumped in transit, the rider will remain safely in control of the bike. This electric bike also features folding pedals, front light, reflectors, adjustable pedal-assist power, adjustable handlebars and seat height, Tektro brakes, and a USB outlet to charge your phone whilst riding.

Additional Information

Additional Information


Designation Road spec folding electric bike
Assembly Required Minimal assemble required
Main Use Commuting
Nominal Power Max 250W continuous
Max Speed 25km/h with motor assistance
Max Rider Weight 120kg
Max Range 70km
Average Range 50km
Throttle Type Thumb throttle (removable, check legality with local authorities)
Pedal Assist Levels Low, medium and high power
Grips Lock grips
Pedals Folding pedals
Crankset 3 piece 52 tooth chainwheel crankset
Tyres 20" x 1.75" multi use
Wiring type Internal
Lights Front and rear
Frame Material Aluminium Alloy


Battery Chemistry LiMn2O4 Lithium Ion
Nominal Battery Voltage 36V
Charged Battery Voltage 42V
Battery Capacity 7.8Ah
Nominal Battery Energy 280Wh
Battery Removable Yes
Battery Cell Type 18650
Cell Spec LG M26 3C Max discharge
Cell Configuration 10S 3P
Built in BMS Yes
Other Features Lockable, removable, USB charging
Battery Charger Type 2A SANS
Battery Charge Time 4 hours from zero charge


Brake Type Tektro V brakes


Transmission Brand Shimano
Transmission Type Derailleur
Shifters Shimano
Deraileur Shimano Tourney


Motor Brand Dillenger OEM
Motor Model 250W geared
Motor Voltage 36V
Max Motor Power 450W
Drive Type Geared
Motor Sensors Hall sensor, speed sensor


Controller Brand Dillenger OEM


Total Weight - No Battery 16.4kg
Battery Weight 1.8kg
Total Weight 18.2kg


Length 154cm
Width 61cm
Height 102cm
Frame Size 112cm
Wheel Base 106cm
Wheel Size 20"
Ground to Max Seat Height 98cm
Ground to Lowest Seat Height 65cm


Folded Length 88cm (approx.)
Folded Width 45cm (approx.)
Folded Height 62cm (approx.)

Whats in the Box?


Customer Reviews (1)

Great with some flawsReview by Stuart
Functions as Described
Overall Rating
First of all, I think for the price paid (£700), this is a great value product.

It handles hills well and allows me, an asthmatic, to overtake hardy road cyclists without effort.

I am comparing this bike to a 2014 Tern Verge P18, which is a non electric 20" folding bike.

The advantages (other than it being electric) I found are:-

* The brakes are more effective on this bike than on the Tern and the tyres provided handle much better on gravel or dusty roads
* Despite the brakes being more effective, on this bike I am not plunged into the air as soon as I use the front brakes
* The seat is much more comfortable - which is not hard since the Tern seat felt like gravel
* The seat extends to a higher height and the handle bars are not fixed in height, which is great
* The gear changing mechanism works well, with few failed gear changes

The flaws I found (other than it being heavier due to being electric) are:-

* Relative to my previous bike, the folding mechanism is nowhere near as refined
*** It is not easy to carry this bike whilst folded - there are no obvious holding positions that are easy to hold and feel sturdy enough
*** The folding joint on the handle bars only has one axis of rotation, which results in a much larger and awkward footprint for the bike once folded
*** It falls over very easily whilst folded - this is overcome in the Tern bike by having a longer seat post - when that is lowered it sits on the floor flatly, keeping the bike stable
*** With the Tern, they also had a magnetic connector to hold the two wheels together securely

* The power indicator for the battery randomly changes periodically - going down to 1, back up to 4, down to 2, back to 3, etc.

* Sometimes the motor does not engage until a few seconds after required.
*** This is particularly unsettling when setting off at a junction.
*** It makes it very difficult to determine whether you need to recharge the bike or not.

* Rear light supplied is just a cheap one with its own internal battery

Changes I would suggest:-

* Extend the seat post so it can be deployed as an extra leg
* Incorporate some means to carry it while folded - e.g. make the rear light casing strong enough to carry the bike by
* Work on getting it to fold up more compactly

As I say, this e-bike is still a massive bargain. I have investigated other options and to get something that doesn't have these flaws, I would need to pay £2,000 or more. (Posted on 18/05/2018)

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