WILIER Filante SLR ID2 - E666IDE - 2026

WILIER Filante SLR ID2 - E666IDE - 2026

Characteristics

• Frame : STREAMLINED SLR ID2 - CARBON MONOCOQUE HUS MOD + LIQUID CRYSTAL POLYMER + AERO KIT (bottles)
• Fork : STRONG SLR ID2 - CARBON MONOCOQUE HUS MOD + LIQUID CRYSTAL POLYMER
• Wheels : MICHE KLEOS RD 50 CARBON | CERAMICSPEED BEARINGS
• Handlebar : F BAR ID2 INTEGRATED CARBON CUSTOM MADE + GARMIN/WAHOO MOUNT
• Handlebar weight : 340 g +/- 5%
• Headset : CUSTOM SUPERSLIM 1-1/4" UPPER BR | FSA MR137 1-1/4" LOWER BR
• Shift levers : SHIMANO DURA-ACE Di2 ST-R9270
• Brakes : SHIMANO DURA-ACE BR-R9270
• Rotors : SHIMANO DURA-ACE RT-CL900 160 / 140
• Derailleur : SHIMANO DURA-ACE Di2 FD-R9250
• Gear : SHIMANO DURA-ACE Di2 FD-R9250
• Crankset : SHIMANO DURA-ACE FC-R9200 50-34T
• Bottom bracket : MICHE INTEGRALE RD | CERAMICSPEED PRESSFIT 86.5X41
• Cassette : SHIMANO DURA-ACE CS-R9200-12 11-30T
• Chain : SHIMANO DURA-ACE CN-M9100
• Tires : VITTORIA CORSA PRO 700X28c
• Saddle : PROLOGO SADDLE NAGO R4 PAS TIROX 137mm
• Seatpost : WILIER FILANTE ID2 CARBON CUSTOM MADE -0 mm
• Axle : MICHE THRU AXLE LIGHT 12X119.5F 12X166.5R
• Frame weight : 860 g +/- 2%
• Fork weight : 380g +/- 5%

Integrated innovation: the Aerokit system
The down tube, always one of the most complex areas from a design point of view, was developed with a specific goal: to have the minimum aerodynamic resistance and reduce the exposure of the water bottles to the air as much as possible.

The Aerokit system was designed with this very purpose in mind by our Innovation Lab, together with Elite Cycling, a global leader in the design and production of cycling hydration systems. This collaboration resulted in a kit that combines functionality and performance: 1100 ml of total capacity, optimally distributed and with minimal aerodynamic impact.

From a technical standpoint, the Aerokit works like a real spoiler, capable of keeping the air more stable and less disturbed around the chassis . Compared to traditional systems, aerodynamic drag is reduced by more than two-thirds.

The Aerokit is also compatible with traditional round bottles: from 550ml on the down tube and up to 750ml on the seat tube.

A new aero benchmark on the market
Rigorous testing in the Silverstone wind tunnel has taken an ambitious project beyond all expectations.

The verdict was extraordinary: a 13.6% reduction in drag , exceeding the 12% estimated by CFD simulations. In the complete bike-plus-rider system—a key aspect for Wilier—we recorded a 4.5% improvement in aerodynamic resistance.

The comparison with the Filante SLR ID1 highlights tangible and significant advantages: maintaining the same speed of 40 km/h, a full 14.15 watts of power are saved . The distance data is even more impressive: delivering the same power of 290 W over a 70 km route, you gain 1 minute and 45 seconds, a margin that makes the difference in a competitive environment.

The decisive test came in direct comparison with the five top-of-the-range World Tour competitors: an average aerodynamic drag coefficient better than 2.42%.

At the speeds of modern cycling, this difference means seconds gained and concrete advantages in the race.

F-Bar ID2: Aerodynamic cockpit for superior control and comfort
The new F-Bar ID2 is an aerodynamic cockpit developed around the needs of the modern cyclist, thanks to the joint work of the engineers and athletes of the Groupama – FDJ Cycling Team.

Every detail is designed to offer you maximum efficiency and control in all riding conditions. The OEF (Optimized Ergonomic Flare) design introduces a 3 cm orthogonal flare between the low and high grips (available in 35/38 cm, 37/40 cm and 39/42 cm) which, unlike other handlebars with differentiated widths, maintains the ergonomics of the controls unchanged, ensuring a natural, comfortable and compact position, to further improve aerodynamic performance.

For the first time on a Wilier product, the handlebar mounting hardware is completely hidden, benefiting aesthetics, protection from dirt and sweat, and aerodynamic performance — all in full compliance with the latest UCI regulations.

Fork: true aerodynamic efficiency in the details
To design the fork, we analyzed numerous NACA airfoils, aerodynamic shapes derived from aeronautics and mathematically defined to ensure maximum airflow efficiency. Each airfoil was tested in combination with the wheel and tire using CFD simulations, considering different wind angles to reproduce real-world conditions.

The result is a fork with NACA external profile blades and a flat internal profile.

The fork crown taper is even more accentuated than the Filante SLR, and guarantees greater torsional rigidity combined with superior resistance to stress.

The left slider integrates a thin aerodynamic fin that touches the disc and envelops the brake caliper: a partial fairing already successfully tested on the Supersonica SLR, now further refined.

Finally, the thru-axle clamping bushing has been completely incorporated into the right chainstay: an absolutely new solution for Wilier products, which combines aesthetic elegance, clean lines and a tangible benefit in terms of aerodynamics.

The seatpost that combines efficiency and lightness
With the experience gained in developing the Supersonica SLR, we already had the right formula in our laboratories: a balance between aesthetics, lightness and comfort.

The new Filante SLR ID2 seatpost is born from this recipe, with a thin and sharp profile, which optimizes aerodynamic penetration without compromising rigidity and ensuring good absorption of vibrations on the vertical plane.

Available as standard with 0 offset or - on request - with 15 mm of setback.

Weight and materials: the essence of speed is in balance

For an aero frame, the starting point is always the search for the perfect balance between aerodynamics, stiffness, and responsiveness. It's not about pursuing extreme lightness, but rather achieving maximum efficiency at high speeds, ensuring precise and stable response in all riding conditions, while still allowing for builds with weights just above the UCI limits.

 

To achieve this goal, the choice of materials is crucial. For the Filante SLR ID2, we also used the highest-quality composites, the result of a collaboration with Toray, a world leader in carbon fiber production.

 

Three types of fibres are used for the monocoque lamination – T800, T1100 and M46JB – selected and mixed together to best combine reactivity, stiffness and lightness, for a total weight, in the Dura Ace Di2 specification, of 7.1 kg.