WILIER Filante SLR ID2 - E666LDO - 2026

WILIER Filante SLR ID2 - E666LDO - 2026

Features

• Frame: FILANTE SLR ID2 - CARBON MONOCOQUE HUS MOD + LIQUID CRYSTAL POLYMER + AERO KIT (bottles)
• Fork: FILANTE SLR ID2 - CARBON MONOCOQUE HUS MOD + LIQUID CRYSTAL POLYMER
• Wheels: MICHE KLEOS 50 CARBON
• 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 ULTEGRA Di2 ST-R8170
• Brakes: SHIMANO ULTEGRA Di2 R8170
• Rotors: SHIMANO RT-CL800 160 / 140
• Front derailleur: SHIMANO ULTEGRA Di2 FD-R8150
• Rear derailleur: SHIMANO ULTEGRA Di2 RD-R8150
• Crankset: SHIMANO ULTEGRA FC-R8100 50-34T
• Bottom bracket: SHIMANO BB9241 - PRESSFIT 86.5X41
• Cassette: SHIMANO ULTEGRA CS-R8101-12 11-30T
• Chain: SHIMANO ULTEGRA CN-M8100
• 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: 380 g +/- 5%

Integrated innovation: the Aerokit system
The downtube, historically one of the most complex areas to design, has been developed with a precise objective: to minimize aerodynamic drag and reduce the exposure of water bottles to the air as much as possible. 
 
The Aerokit system was designed with this intent by our Innovation Lab in collaboration with Elite Cycling, a global leader in the design and production of hydration systems for cycling. This collaboration resulted in a kit that combines functionality and performance: 1100 ml of total capacity, optimally distributed with minimal aerodynamic impact.
 
From a technical standpoint, the Aerokit functions as a true wing, capable of keeping the air more stable and less disturbed 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 downtube and up to 750ml on the seat tube.

A new aero benchmark on the market
Rigorous tests in the Silverstone wind tunnel pushed an ambitious project beyond all expectations.
 
The verdict was extraordinary: 13.6% drag reduction, surpassing the 12% estimated by CFD simulations. In the complete bike-plus-rider system — always central to Wilier — we recorded a 4.5% improvement in aerodynamic drag. 
 
The comparison with Filante SLR ID1 highlights tangible and significant advantages: maintaining the same speed of 40 km/h, you save a full 14.15 watts of power. Even more impressive is the data over distance: by delivering the same power of 290 W over a 70 km course, you gain 1 minute and 45 seconds, a margin that makes all the difference in competition.
 
The decisive test came in a direct comparison with the five top World Tour competitors: an average aerodynamic drag coefficient 2.42% better. 
 
At modern cycling speeds, this difference means seconds gained and concrete advantages in a 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 collaborative work of engineers and athletes from the Groupama – FDJ Cycling Team.
 
Every detail is designed to offer you maximum efficiency and control in every riding condition. The O.E.F. (Optimized Ergonomic Flare) design introduces an orthogonal flare of 3 cm between the drops and tops (available in 35/38 cm, 37/40 cm, and 39/42 cm) which, unlike other variable-width handlebars, maintains the ergonomics of the controls unchanged, ensuring a natural, comfortable, and tucked position to further improve aerodynamic performance.
 
For the first time on a Wilier product, the handlebar fastening hardware is completely hidden, benefiting aesthetics, protection from dirt and sweat, and aerodynamic performance — all while fully complying with the latest UCI regulations.

Fork: true aerodynamic efficiency lies in the details
For the fork design, we analyzed numerous NACA profiles, aerodynamic shapes derived from aeronautics and mathematically defined to ensure maximum efficiency in airflow. Each profile was tested in combination with the wheel and tire through CFD simulations, considering different wind incidence angles to reproduce real-world conditions.
 
The result is a fork with external NACA profile blades and a flat internal profile.
 
The fork crown cone is even more accentuated than on the Filante SLR, ensuring greater torsional stiffness combined with superior stress resistance.
 
The left blade integrates a thin aerodynamic fin that skirts the disc and wraps around the brake caliper: a partial fairing already successfully tested on the Supersonica SLR, now further refined.
 
Finally, the through-axle clamping bushing has been completely integrated into the right blade: an entirely new solution for Wilier products, combining aesthetic elegance, clean lines, and a tangible aerodynamic benefit.

The seatpost that combines efficiency and lightness
With the experience gained in developing the Supersonica SLR, we already had the right formula in our labs: a balance between aesthetics, lightness, and comfort. 
 
The new Filante SLR ID2 seatpost is born from this recipe, with a thin and sharp profile that optimizes aerodynamic penetration without compromising stiffness and ensuring good vibration absorption on the vertical plane.
 
Available as standard with 0 offset or - upon request - with 15 mm setback.

Weight and materials: the essence of speed is in balance

For an aero frame, the starting point is always the pursuit of balance between aerodynamics, stiffness, and responsiveness. It’s not about chasing extreme lightness, but about achieving maximum efficiency at high speeds, ensuring precise and stable response in every riding condition, while still allowing for builds just above UCI limits.

 

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

 

For the monocoque lamination, three types of fibers – T800, T1100, and M46JB – are used, selected and blended to best combine responsiveness, stiffness, and lightness, for a total weight, in the specific Dura Ace Di2 build, of 7.1 kg.