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BULTACO, LMX BIKES : the first electric bikes/motorcycles

moto bultaco

BULTACO, LMX BIKES : the first electric bikes/motorcycles

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Motorbike sport - New sporting practices that are developing


The use of electric motorcycles has increased considerably over the past 10 years. This trend is particularly visible in the field of off-road sports like enduro, cross and trial.

The practice of thermal motocross has evolved. Noise pollution and carbon emissions are less and less tolerated by the neighborhood. Playgrounds are increasingly limited for riders.

Electric motorcycles then began to appear on the roads. Silent, emission-free and without constraints, they are seen as an alternative that is more respectful of nature and the people.

Electric motorcycles have therefore become an interesting alternative for off-road enthusiasts. They allow motorcyclists to practice their favorite sports without causing any nuisance while respecting the surrounding nature.

New models are emerging, including ultra-light electric motocross bikes specially designed for off-road practices. They offer impressive performance in the field. Their responsiveness makes practice more fun and accessible for pilots.

You got it : the LMX project has been driven from the start by a vision of an electric future for motorsport.

Electric motocross - The appearance of new platforms on the market (Bultaco Brinco, LMX)


Along with the development of these new practices, several models have appeared on the market. Historical manufacturers like Bultaco, a Spanish brand, have developed models of electric motorcycles suitable for enduro or off-road riding.

There are new machines and the Bultaco Brinco is one of them. It’s a two-wheeler halfway between an electric mountain bike and a 50cc motorcycle. It was launched in 2016.

1.3 kWh battery, motor performance up to 3 kW peak, the Bultaco Brinco said it offered a unique driving experience.

The Brinco could move thanks to a dual assistance system. It included a handlebar throttle grip and a traditional bicycle crankset. The advertised maximum assistance speed was 60 km/h.


2018 : Stop production of BULTACO BRINCO motorcycles

This hybrid electric vehicle was intriguing. Bicycle and motocross enthusiasts were challenged. New practitioners were curious to test these more accessible machines than conventional thermal motorcycles.

For several reasons, the brand ended the production of Bultaco Brinco motorcycles in 2018.

LMX Bikes and the LMX 161, the French ultra-light electric motorcycle

moto bultaco

We had already been working in 2016 on the LMX project for a few years. This project aimed to create a high-performance and lightweight electric motorcycle bike, by abolishing all thermal constraints.

A year later, we announced the production launch of the LMX 161.

The LMX 161 has been designed for various uses. It’s perfect for off-roading but also for cross-country competition. Since 2021, it has been used in particular for the LX Cup and FIM Ex-bike Cross World Cup races.

For the more curious, discover the complete history of LMX models right here : ABOUT LMX

From adult electric motocross to 45 km/h speedbike : a common vision

This search for lightness and power is always at the heart of our projects at LMX.

The fast bike is a concept that also responds to this vision. So, since 2018 we have been developing 45 km/h approved speed bikes, manufactured in Jonage.

What’s the speed bike ?

A powerful and fast e-bike with assistance up to 45km/h. It is particularly suitable for sports practice, but also for urban travel, between home and work.

What the speed bike allows :

  • Performance comparable to thermal models.
  • Increased autonomy for ever longer bike rides.
  • Unique sensations and driving experience, halfway between a bike and a moped.
  • Real versatility in terms of practice: comfortable on the road during the week and off-road the weekend.
Bultaco moto

And you, are you more of an ultra-light electric motorcycle team or a super-powerful electric bike for your outings ?

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The evolution of LMX Bikes since 2016

The evolution of LMX Bikes since 2016

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It has now been more than 6 years since LMX Bikes entered the market by producing its electric two-wheelers in its own manufacturing workshop.

And we told you in our last article, 2022 is the year of surprises…

We therefore invite you to dive into the heart of the LMX workshop, which has continued to grow over the years, to discover behind the scenes of the brand since 2016.

From 2016 to 2018 : the very first LMX manufacturing workshop

6 years ago, the LMX Bikes brand was registered. Serious things can begin.

The LMX team then moved into our very first manufacturing workshop, a 150m2 room located in Frontonas, in North Isère.


It was in 2017 that our first oven was handcrafted in the LMX workshop. Welding of the chassis, cabling of the regulator, installation of resistors, a real tailor-made project !

Furnace during manufacture : Frontonas, 2017

Interior of the oven : Frontonas, 2017

This oven allowed us to make the first 400 LMX frames and is still in service in our workshop in 2022. Thanks to its high-performance insulation, its heating capacity can go up to 530° with only 3 kw. But we told you, 2022 is the year of novelties…

Case to follow !

In addition to the frames, we also heat treated the steel engine gears using our own gas oven.

100% manual machining of an LMX 81 hub in 7075-T6 aluminium. More than 7 hours of lathe and milling work were necessary.

Our swingarms are made of aluminum sheet metal for better rigidity on our LMX 161s. Manufactured in-house, this is still the current design.

Swingarms and engine blocks of the first 5 LMX 81, early 2017

In-house machined LMX 81 engine blocks, 2017

First aluminum LMX 161 frames, 2017


In 2017, we started TIG welding the first series frames of the LMX 81, our first electric mountain bike. Manufactured in-house, we use a weld assembly to ensure the correct position of all the parts that make up the LMX swingarm and thus gain precision.

This assembly has since been modified and is now used for mounting LMX 64 swingarms.

2nd prototype frame of the LMX 64

LMX 54 frame welding, 2017

Welding of the first LMX 81 frames


In addition to the production and manufacture of our electric two-wheelers, our workshop also has an in-house design office dedicated to design.

From the start, we have been carrying out all the manufacturing plans and technical studies for our models (here those of the LMX 81).

R&D (Research & Development) has been an integral part of LMX Bikes key activities since the beginning.

Here, heating tests are carried out on the batteries with the thermal camera to check the heating of the cells once assembled one by one in the final pack.

Engine equipped with liquid cooling, 2017

Test bench – battery heater tests, 2018

Test bench – engine tests, 2018

New solutions are designed and tested regularly. For example, our electric motorcycle prototypes in 2017 were already equipped with liquid cooling. This is a technology that was later abandoned to make the system more reliable by integrating a more powerful motor instead.

From the start, the search for reliability remains at the heart of our concerns.

The assembly

Within these 150 m2, we were already assembling our first motorcycles with custom-made tools : here, the assembly feet of the workshop were adapted to our vehicles and fully adjustable.


Since January 2018, we have been traveling the roads thanks to the first LMX truck, which brings us into direct contact with our customers and our dealers. We also travel regularly to various events (fairs, festivals, races, photo shoots, etc.).

From 2018 to 2022 : the LMX workshop moves to new premises

After spending 3 years in our first premises, we had to think bigger and support the strong growth of the brand. This is how we moved into our new 455m2 production workshop in 2018. Between design, manufacturing, assembly, marketing, preparation for dispatch, our current workshop is running at full speed !

Installation of premises, 2018

The production

The production of the frames of our LMX 64s is always carried out locally in Frontonas. Discover all the stages of the manufacturing process in our dedicated article.

In addition to frames and swingarms, we manufacture other elements of our two-wheelers, such as motorcycle batteries, thermoformed fairings, engraving of serial numbers, various wiring (manufacture of harnesses), and parts in 3D printing.

Speed Bike LMX 64
Usinage LMX

The assembly

We continue to assemble our speed bikes and electric motorcycles in our workshop on our two assembly lines : one dedicated to LMX 64 and another dedicated to LMX 161.

We produce and assemble the LMX 161 battery packs. The cells are welded using a digitally controlled welding machine developed in-house. Composed of Samsung 18650 cells, each battery alone is 2 kwh. To date, more than 300 kWh of battery have been fitted in packs since 2016.

Design Office

Finally, design and research still remain a key activity of the brand today. Our new 2022 model is currently under development thanks to a team of passionate engineers.

Here, the prototype n°1 of the engine block of the LMX 56 machined in aluminum 6061-T6.

2022 : a new chapter begins for LMX

As you will have understood, after 3 years in our first local and 3 other years in our current local, it is time for us to move up a gear !

It is in this dynamic of growth that we will move in 2022 to a brand new premises… of 841 m2 !

We tell you, this production workshop located in Jonage has industrial-scale ambitions.

Almost 6 times larger than our first local invested 6 years earlier, there is really something to announce heavy for the future !

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The evolution of the LMX bikes in photos

Moto électrique LMX 161 en cours de montage dans l'atelier

The evolution of the LMX bikes in photos

In this article

Here we go, the year 2022 is already off to a flying start in the workshop.

We are in full development of the new LMX platform that we presented to you recently, we give you a thousand : the LMX 56 !

You may have already seen it on our Instagram (@lmx_freeride), the prototype n°1 rolls regularly on the field with the aim of being tested and improved by our teams, in order to deliver you this year the most LMX integrated into the range.

This period of new year and strong technological developments is the perfect opportunity to look back on the first steps of LMX and the evolution of our models over the years, to arrive at those that you know today.

And all in pictures please !

The genesis of the project

The project appeared between 2008 and 2011, with the creation of a first all-terrain electric bike. The first frame was not strong enough, so the pedals had to be removed first. But you already know that they quickly came back in force afterwards…

It was then between 2012 and 2013 that four LMX prototypes named P1 and P2 were born, based on the concept of an ultra-light electric motorcycle, intended for use in motocross, freeride and enduro.

In June 2014, the first six frames of this P2.1 concept bike were released as pre-production models and became the first sales of the project.

  • Features : Chromo-molly 25cd4s tig welded steel without paint

In 2015, the latest LMX P2.2 and P.2.3 frames are industrialized and manufactured in Ukraine. About forty models will leave the factory.

  • Features : Powder coated steel

It was in 2016 that LMX Bikes launched a new e-commerce site and then became a real brand.

The evolution fo the platforms

LMX 161


The LMX adventure began with the development of the brand’s first aluminum platform : the LMX 161.

The search for lightness and performance was the common thread that gave rise to the LMX brand name, which simply stands for Lightweight Motocross (MX).

This is how the first French 45 kg electric off-road motorcycle was born in 2017.

LMX 161H

2018 - today

The LMX 161 was then approved as a 45 km/h moped in 2018 and is therefore available in two versions : the LMX 161H and the LMX 161MX. The road and public paths are now accessible to it, which makes it even more versatile and fun to use.

Equipped with a rearview mirror, license plate holder and front lights, it is the perfect partner for weekday urban outings and weekend sporting outings.

LMX 81


After the development of its ultralight electric motorcycle, LMX Bikes is looking for new goals and sets out to design an ultra-efficient electric bike.

This is how the LMX 81 was born in 2017 in its manufacturing workshop.

To meet the brand’s vision of ultra-performance, it was necessary to develop a two-wheeler much more powerful than a simple VAE. The concept of the LMX 81 seemed obvious : a two-wheeler with the appearance of a freeride mountain bike with pedals and the performance of a real electric motorcycle with a thumb trigger.

“It is thanks to the double transmission technology that we were able to put our LMX back on the pedals while keeping the power acquired”

LMX 64

2018 - today

The LMX 64 has been one of the brand’s emblems since 2018. The first LMX platform equipped with a torque sensor, it is a real revolution for the brand in terms of engine.

This 45 km/h speed bike is first offered in an offroad version, the LMX 64T. Then, it passes the European L1e-B moped homologation in mid-2020 and becomes the LMX 64H in street legal version.

Both versions are available today and make the LMX 64 an ultra-versatile two-wheeler that adapts to you however you ride.

Several improvements are emerging over the months :

  • The development of a belt transmission on the pedaling side : more discreet and more practical.
  • New controller in 2020 : color display, more modes and finer management of the torque sensor, direct USB connection to the bike with a computer.
“The LMX 64 is based on the transmission of the LMX 81 but has been made more industrializable in order to arrive at a reasonable final cost for our customers by integrating the idea of a torque sensor from the start.”

LMX 64 Ultimate


At the end of 2020, LMX Bikes wanted to highlight its famous LMX 64 by offering a limited edition of it, even more efficient and innovative, marking 5 years of technical developments for the brand in the field of speed bike.

The LMX 64 Ultimate is an ambitious project responding to our desire to celebrate speed biking through high-end, high-performance parts, and to offer a version that would delight the most demanding riders and lovers of fine mechanics.


2021 - today

In 2021, the LMX 161 MX offroad evolved into the LMX 161 MXR.

With an R like Racing, this new version breaks all records in terms of performance among LMX vehicles. In 2022, it will participate in several competitions organized by the FIM to represent the LMX brand and its ambition to offer ultra-powerful and very playful two-wheelers on the ground.

Work on the throttle curve to make it as linear as possible. Detach from the ON/OFF behavior to arrive at a more flexible and progressive behavior.

LMX 56


New for 2022 !

This new model will take its place this year as the spearhead and demonstrator of LMX know-how, thanks to its new geometry and engine.

It will indeed be much more than a simple version of the current LMX 64. Its chassis and components are inspired by the world of trial motorcycles, for great promises of performance. Enough to tame the steepest terrain and push the limits of what’s possible on two wheels !

As you will have understood, innovation is at the heart of the LMX philosophy and the desire to develop ever more efficient electric two-wheelers drives us every day.

Thank you for your support for all these years and stay tuned, this year 2022 is going to be full of surprises…

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The LMX team is growing and making the presentations !

The LMX team is growing and making the presentations !

For several months, LMX Bikes has been recruiting new employees to strengthen its team of enthusiasts and adapt to its new growth.

This strong internal development is an integral part of our news, which is why we would like to present the entire LMX team to you so you can get to know us better !


Co-founder and current leader of LMX Bikes, Adam has been in charge since the start of the project. An INSA engineer graduate, he is passionate about technology, always placing innovation at the heart of his thinking.

In charge of the management of the company, design and product development, he also supervises the manufacture and assembly of LMXs until their commercialization.

Adam is a real Swiss Army knife, guided by a passion for the profession and the search for excellence.


Newly arrived at LMX, Hervé joined the team to take care of business development and customer relations. If you call, chances are you’ll have it online. Passionate about mountain biking and running, he will be able to answer your technical questions with pleasure and guide you throughout your sporting project.

Hervé also takes care of the relationship with the network of our various resellers, but may also be required to lend a hand to the workshop for the assembly of LMXs.

In post since August 2020, Zoé is responsible for marketing and communication missions for LMX Bikes. Passionate about and daily sports enthusiast, she is responsible for LMX publications on social networks and the blog, appearances in the press, on events, website management, etc.

She is also co-responsible for customer relations with Hervé and Adam. If you want to talk about press relations or a plan to buy, you are also likely to run into her over the phone.


Workshop manager for a year at LMX now, Thierry takes care of the entire vehicle assembly line. He is also responsible for the heat treatment and control of the frames after the welding stage. It also participates in the production and development of electrical harnesses and cabling. A big fan of physical activity, he strengthens and biking every week.

In his constant search for quality, it is he who comes to test vehicles before final delivery and to ensure their reliability. His expertise and thoroughness are an integral part of the soul of LMX Bikes.

A future graduate of the Arts and Crafts engineer, Côme joined the LMX team this year and is responsible for R&D on the design of new components (optimization of the battery, engine block, etc.), in duo with Gaëtan. His taste for running and triathlon led him to focus on the field of sport over the course of his experiences. Côme is also working on the structuring and optimization of LMX processes, for example with the establishment of a knowledge base and a client meeting platform.

Passionate about mountain biking and great practitioner for almost 12 years with several competitions behind him, Gaëtan has been involved for several weeks in the design (CAD) of components and parts designed and manufactured in-house by LMX, whether it is frames, blocks motors, batteries, etc. He also works on programming the machining of prototypes and on carrying out tests on them in duo with Côme.

Carole joined the team a few months ago and carries out many missions in our workshop: manual manufacture of motorcycle batteries, assembly of LMXs, help in the manufacturing workshop (cutting, bending of aluminum), adjustment and remanufacturing. of certain parts …

After several years of working in a service company, Carole was drawn to LMX products and showed great motivation to work in a company that suits her, innovative and sporty. Actively participating in the realization of LMXs, from the start of manufacturing to the end of assembly, while discovering new techniques every day, are all elements that stimulate her on a daily basis.

Mattis has been on an apprenticeship for almost two years with our team and is working on the very first stages of the LMX manufacturing process : the manual manufacturing of LMX 64 frames.

It is he who comes to trace and bend the aluminum sheets, cut and assemble the tubes to form the frames and prepare them for the welding stage.

After the heat treatment of the latter, Mattis still carries out several finishing operations, such as threading the bottom bracket. Starting from simple aluminum tubes and sheets to create a finished and resistant frame, this is what drives Mattis every day.

We hope you enjoyed this article and that you got to know the LMX team better, through these different portraits.

Each person has their own personality, but the pursuit of excellence and the passion for the profession are all things that bring us all together and that makes what LMX Bikes is today.

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LMX 64 frames : French manufacturing and handmade

LMX 64 frames : French manufacturing and handmade

Speed Bike LMX atelier

Today we are going to talk about one of LMX’s greatest pride: the local manufacture of frames for our speed bikes. All the steps used to design these frames are done as much as possible at our workshop or in partnership with companies in the region. Indeed, the LMX 64 frames are designed, manufactured, welded and assembled in Isère, in the heart of France.

This control of the entire manufacturing process is essential to distill our know-how and expertise in our LMXs.

The frame being an essential element of the speed bike, it was very important for us to design it according to our own specificities in order to integrate the engine as well as possible and to ensure consistency between constraints and technical ambitions. All the critical stages in the manufacture of our frames are tracked by individual quality sheets, which will follow our frames and swingarms throughout their lifecycle.

Why aluminium ?

The answer to this question is part of the core philosophy of LMX Bikes. Indeed, we want to offer high quality, resistant and durable bikes. Our frames are made of 6061-T6 aluminum. It is a material used, among other things, in aeronautics.

One of the main advantages of this aluminum is its high resistance to corrosion, stress and fatigue. LMXs can therefore withstand drops and withstand shocks.

Aluminum is also an infinitely recyclable material, unlike carbon. In addition to lasting a very long time, LMX frames can be recycled at the end of your vehicle’s life. This is a significant point in the choice of materials because we want as much as possible to combine pleasure with responsibility.

Fabrication Vélo rapide

The manufacturing process

1. Design and manufacture

The prototype design of machined parts and tubes is done in-house according to the design specifications. The tubes and machined parts are then made to measure by subcontracting after an in-house prototype phase.

At the same time, the sheets are cut in Meyzieu (1) to then be sent to our workshop in Frontonas (1). These parts are then heated to make them malleable, then cold folded in our workshop to give them their final shape before the welding phase.

2. Welding

All parts of the frame are entrusted to an independent welder, specializing in welding aluminum. Its expertise and know-how guarantee quality work and therefore robust frameworks. Indeed, aluminum welding is a complex technique requiring an alternating voltage and a special manual procedure.

After the frames are welded, a visual inspection of all welds is performed before proceeding to the heat treatment stage.

3. Heat treatment

Then comes the heat treatment step, which is also carried out in our workshop. This is a decisive step in the manufacturing process because it gives aluminum its ultimate strength. The frames, after being welded, are heated in an oven at 520°C for one hour and then immersed in water, this is the quenching step or T4. This will be used to normalize the internal stresses after welding. It is also after this step that the alignment of the frames is checked and corrected on a specific assembly.

They are then heated a second time at 190°C for 2 hours to reach maximum resistance. At this stage, called T6, the frames become so tough that they cannot be corrected for faults. The advantage of aluminum is that a defective frame can be recycled and therefore is not a loss in itself.

Some manipulations are still done by hand on these frames such as the threads or the bore of the seat tube. Performing these operations last ensures that these surfaces will no longer move in order to have the best possible precision.

Vélo rapide
Vélo rapide usinage
vélo rapide fabrication

4. Preparation for painting

Finally, our workshop technicians will sand and manually clean the frames to prepare them for painting or anodizing. They need to be clean and free of grease to proceed to the last step.


5. Paint or anodizing finish

For the final touch, the frames can be treated in different places depending on the expected finishes:

First, we offer a powder coating paint coating. This extremely strong paint is applied in two coats with an oven pass for each coat. For this, we send executives to a specialized company in Saint Marcellin (2).

For limited or luxury editions of our bikes, we offer a gray or champagne anodization treatment. This step is carried out by a company based in Annecy (3).

Speed Bike LMX 64

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