Maxx FAB.4 ELA with Avinox M2SBavarian E-Enduro with exchangeable battery & customised paint finish

Florentin Vesenbeckh

 · 15.04.2026

The Maxx Fab.4 ELA is one of the few Avinox bikes with the new interchangeable battery.
Photo: Maxx
Carbon frame, Avinox motor, customised paint finish: bike manufacturer Maxx from Rosenheim is breaking completely new ground. The FAB.4 not only has the new Avinox M2S with super power on board, but also the Chinese company's new removable battery. The bike can also be customised ex works according to personal wishes.

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The new Maxx FAB.4 ELA Carbonfully is positioned as an E-Enduro for ambitious bikers who don't want to do things by halves. The carbon frame forms the basis for an e-mountainbike that has been specially developed for long, demanding tours and technical trails. As a fully-fledged enduro bike, the FAB.4 ELA aims to combine the climbing capabilities of a touring bike with the downhill performance of a thoroughbred trail machine.

The new carbon fibre bike is powered by the innovative Avinox M2S motor (tested here)which, with up to 150 Nm of torque and 1,500 watts of peak power, makes even the steepest ramps a minor matter. What's more, the Maxx-E-MTB is one of the very few Avinox bikes with a removable battery. This is because the Bavarians have implemented the new removable battery system from Avinox in the down tube with a capacity of either 600 or 800 Wh. This makes the bike not only the new Amflow PR Carbon the only Avinox e-MTB with this technology to date.

Battery system: state-of-the-art cell technology for maximum range

The removable battery system of the FAB.4 ELA uses state-of-the-art 21700 cells, which are known for their high performance and efficiency. Maxx offers the e-mountain bike with two different battery capacities: According to Avinox, the 600 Wh battery has a weight of 2.96 kilograms, while ambitious long-distance riders can opt for the heavier 800 Wh version (approx. 4 kilos), which enables even more extended tours. The removable design has decisive advantages: the battery can be conveniently removed for charging and can be swapped for a second battery for tours lasting several days, thus significantly increasing flexibility. Many metres in altitude without compromising on range become a matter of course.

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The facts about the Maxx Fab.4 ELA

  • 160 mm rear suspension travel / up to 170 mm front suspension fork
  • Carbon frame
  • 29" wheels
  • 5 frame sizes: S / M / L / XL / XXL (for approx. 1.60 m - 2.08 m body height)
  • Individual paint finish in desired colour (matt or glossy)
  • Individually configurable equipment
  • Permissible total weight: 140 kg
  • Price: from 6699 euros

Individualisation: Unique in the Avinox world

An absolutely unique selling point of the Maxx FAB.4 ELA Carbonfully is the unparalleled customisation option. Maxx has set up its own professional wet painting workshop in Rosenheim, making a special service possible: every customer can have their carbon frame individually painted. There are 50 standard colours to choose from, but the possibilities go far beyond that. Anyone who wants to can have their frame painted in the exact colour of their own car, in a company colour or a completely personal shade. Any colour code can be implemented, making the FAB.4 ELA unique in the carbon segment.

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But customisation is not just limited to the look. Maxx also offers extensive customisation options for the components: Tyres, brakes, suspension and ergonomics can be adapted precisely to the personal riding style and individual preferences. The result is an e-mountain bike that is not only powerful, but also bears the personal signature of its owner - from the performance setup to the individual colour scheme.

Carbon frame: Uncompromising engineering for maximum performance

According to the Rosenheim developers, the Maxx carbon frame embodies consistent new thinking in E-MTB design. It was developed from the ground up as the ideal basis for the new Avinox M2S drive system without making any compromises. The engineers were faced with the challenge of creating a frame that was light enough to transform the uphill experience, yet stiff enough to not waste a single watt of energy on the downhill. They claim to have found the solution in an intelligent choice of materials and a precisely designed layered architecture of carbon fibres.

Geometry & chassis: Proven DNA meets innovative kinematics

When developing the geometry, the Maxx engineers used the tried and tested Fab 4 ELS reference system - a basis that has been synonymous with smooth running, agility and chassis control for years. However, instead of simply adopting the existing geometry, it was used as the starting point for consistent further development. The result is a forward-orientated enduro geometry that supports modern riding techniques and guarantees maximum control even on steep, technical descents. At 77 degrees, the seat angle is steep and modern, while the steering angle remains very moderate. 65 degrees is rather steep for an enduro bike, which should prioritise good-natured handling and agility over the last ounce of smoothness.

The rear suspension concept has been completely redeveloped. The new Rocker Link was specially designed to adapt the rear suspension kinematics to the specific requirement profile of E-MTB use with massive power. The kinematics are characterised by a progressive increase in pressure in the final phase, which should effectively absorb hard impacts and prevent bottoming out. At the same time, the response behaviour in the SAG range has been improved so that the suspension should react sensitively to even the smallest bumps. The optimised anti-squat characteristics keep the rear stable when accelerating and transfer the power optimally to the ground.

OLED display: perfect information in all conditions

The integrated 2-inch OLED colour display from Avinox serves as the central control element of the Maxx FAB.4 ELA and impresses with its brilliant display in all lighting conditions. The automatic brightness adjustment ensures that the display is always easy to read in bright sunlight as well as in shady forest areas. The robust design withstands all weather conditions, while the ability to operate the display with gloves allows comfortable control even in cold or wet conditions. This means that the rider always has all the important information in view - in the sun, rain and on any trail.

Opinion of the BIKE editorial team

The Bavarian manufacturer Maxx had gone quiet. But this bike could change that. With the Avinox M2S, the Rosenheim-based company has opted for the hottest motor of the moment. The removable battery in particular makes the Fab.4 ELA exciting, as the choice of bikes is still very limited. Added to this is the exciting customisation option that no other Avinox bike offers. We are looking forward to testing the new E-Enduro, because without good riding characteristics, the unique selling points don't help much.

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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