Wilier Filante Hybrid Shimano Ultegra Di2/WilierSLR42KC 2025

It's hard to believe that this bike has a system inside that electrically supports pedaling. And yet it's true. The Filante Hybrid is an e-racing bike with the lightest drive system in the world: The new X20 motor was developed by the German company Mahle, which is driving technological innovation towards climate-neutral mobility.

The Filante Hybrid was developed with a clear goal: to ride faster with less effort. By combining Mahle's new X20 system with Wilier's know-how in aerodynamic efficiency and the use of composite materials, they were able to raise the bar even higher for the Cento10 Hybrid, creating a product that has received prestigious international awards in recent seasons.

So overall, an energy saving of almost 8%. Better handling of the battery, more integration and therefore better aerodynamics, lower weight, better performance.

State-of-the-art frame technology

The Filante Hybrid definitely resembles the Filante SLR, the bike used by the Astana pro racers: no opening on the frame (except for the one needed to charge the motor battery), an integrated carbon monocoque handlebar that houses the shift cables and the electrical system controls. The seat post is like the Filante, aerodynamic and made of carbon.

Integrated battery and range

The integrated down tube battery has a capacity of 250 Wh and can be expanded by an additional 185 Wh with an additional bottle battery located on the bottle holder of the seat tube. As in the previous version, there is software and an app available to users and dealers to manage, monitor and configure the system.

New force sensor

To improve the riding experience, a new bottom bracket has been introduced with the torque (power) and cadence sensor. By using a cadence and power sensor, the user (or rather their pedaling movement - their power) communicates with the motor. This "pedaling measurement" allows the system to adjust the assistance power so that the cyclist has a natural pedaling feel and there are no jerky movements, sudden accelerations or loss of assistance. This means that the motor still delivers a consistent power even on challenging gradients of more than 10%. All of this contributes to making the riding experience more and more like that of a conventional bicycle.

The force sensor (in combination with the new firmware) also allows for optimization of battery consumption, as the power supply is much more sensitive and proportional to the force applied by the rider.

New miniature engine

The X20 motor is miniaturized: it is very light (the complete system goes from the 3.6 kg of the X35 to the 3.5 kg of the X20), with modern straight pull spokes (24 pieces), perfectly combined with the Wilier Triestina carbon rims. The new X20 hub motor by Mahle delivers 60 Nm of torque, but has another important innovation. The freehub body can be easily removed from the "motor" housing for maintenance or replacement. The freehub bodies produced are compatible with Shimano, SRAM XDR and Campagnolo.

Pulsar One as standard

The Filante Hybrid is equipped with the Pulsar One as standard. The compact, handy on-board computer provides real-time information on the electrical system data and riding statistics on its 2.1-inch display and - if necessary - the assistance level can be changed. The Pulsar One connects to the X20 system via the ANT+ protocol and also to other sensors (cadence, power and heart rate monitor), whose data can be shown directly on the display for a better experience.

Rear thru axle

There is one very important detail that makes the Filante Hybrid an absolute first in its category: the wheel that houses the new Mahle X20 motor can be installed and removed just as quickly as on a normal racing bike with a conventional thru axle. In addition to the easy and quick installation and removal of the wheel, the system provides an automatic connection to the battery. There is no longer any need to connect or disconnect cables by hand. Everything happens automatically when the wheel is inserted. How? Very simple: the left rear derailleur hanger has a slide with a built-in electrical connection that positions the hub so that it comes into contact with the battery: quickly and without incorrect engagement.

Complete integration

The integrated carbon monocoque handlebar takes up the aerodynamic design of the Filante Bar. However, the hybrid version has the new iWOC button and display on the stem. This interface can be used to switch on the system and change the assistance mode. The handlebar with this special "design" allows the 4 assistance levels (Automatic, Eco, Sport and Boost) to be selected without the biker having to take their hands off the upper part of the handlebar: a particular safety plus for the cyclist! Compared to the previous version of the iWoc, Mahle has not only improved ergonomics, but also the ease of use and the reading of the data: the battery charge level and the selected assistance mode can be seen at a glance.

clearance and geometry

The tire clearance is suitable for a modern road bike and supports rims with tires up to 32 mm wide. The geometry of the Filante Hybrid is the same as your endurance models. So don't expect aggressive geometry, even if the bike might give that impression visually: relaxed geometry with a large stack and limited reach. 6 sizes available from XS to XXL.

Attention: Image may vary. Please refer to the specification table for exact features!

• New, lightweight Mahle X20 engine
• Allows the installation of comfortable tires up to 32mm wide
• Fully integrated cockpit
• Increased range with optional battery for the bottle holder

• 1 x Wilier Filante Hybrid 28'' E-Bike complete bike (see item description for details)