The down tube, which has always been one of the most complex areas from a design perspective, was developed with a precise goal: to have the minimum aerodynamic drag and to reduce the exposure of the water bottles to the air as much as possible. The Aerokit system was specifically designed with this intention by our Innovation Lab together with Elite Cycling, a global leader in the design and production of hydration systems for cycling. This partnership has resulted in a kit that combines functionality and performance: 1100 ml of total capacity, optimally distributed and with a minimal aerodynamic impact. From a technical perspective, the Aerokit functions as a veritable spoiler, capable of keeping the air more stable and less turbulent around the frame. Compared to traditional systems, aerodynamic drag is reduced by over two-thirds. The Aerokit is also compatible with traditional round water bottles: 550ml on the down tube and up to 750ml on the seat tube. The Filante SLR ID2 frame is designed to meet the different needs of cyclists by allowing for the installation of traditional bottle cages.

For the design of the fork, we analysed numerous NACA airfoils - aerodynamic shapes derived from aeronautics and mathematically defined to ensure maximum efficiency in the airflow. Every airfoil was tested in combination with the wheel and tyre through CFD simulations, considering different wind incidence angles to reproduce real-world usage conditions. The result is a fork whose legs combine an external NACA airfoil with a flat inner profile. The fork crown cone is even more pronounced than on the Filante SLR, guaranteeing greater torsional stiffness combined with superior stress resistance. The left fork leg integrates a thin aerodynamic fin that skims the disc and envelops the brake caliper: a partial fairing already successfully experimented with on the Supersonica SLR, now further refined. Finally, the thru axle clamping bushing has been completely encased into the right fork leg: a first for Wilier products, which combines aesthetic elegance, clean-cut silhouettes, and a tangible benefit in terms of aerodynamics.

With such a sleek design for the seatpost, the Shimano Di2 battery needed to be repositioned. Moving the battery to the bottom bracket box area gave us multiple, immediate, and tangible advantages: Accessibility: the battery, enclosed in a resin casing and secured with two screws, can be checked or replaced in a matter of moments, without removing the seatpost or changing the saddle height. Lower centre of gravity: the new position contributes to lowering the bike's centre of mass, in synergy with the lowered Aerokit. The result is a more stable, precise, and manageable bike when riding at high speeds.

The Filante SLR ID2 has been designed to offer you the perfect balance between aerodynamics and versatility. A tyre clearance of up to 34 mm allows you to choose the perfect tyre to tackle a wide variety of surfaces with confidence, while simultaneously guaranteeing maximum aerodynamic efficiency. Thanks to the removable derailleur support, the drivetrain can also be configured as a 1x setup, accommodating chainrings with up to 55 teeth. This solution enhances the clean-cut aesthetics, reduces weight, and boosts performance in the most ‘racing’ configurations.

Direct collaboration with the Groupama - FDJ Cycling Team led us to refine every minute detail in terms of frame geometries. The goal: to have a virtually bespoke fitting system. Thanks to the AccuFit system, every size maintains the same geometric consistency and fitting precision, delivering a balanced, natural, and high-performance riding experience, whatever your height or pedaling style. The Filante SLR ID2 is conceived like a tailored suit for you: with 6 frame sizes, 7 handlebar spacer combinations, 5 stem sizes, and 2 seatpost versions, 420 fitting configurations are possible, each differing from the next by a mere 2 millimetres. This precision allows for a customised saddle position, like a high-end tailoring garment.

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