The Wilier Triestina Filante SLR ID2 is the ultimate evolution of the brand's high-end aerodynamic racing bicycle, designed to be the "FASTEST" version of a rider. Developed in direct collaboration with World Tour professionals, including the Groupama-FDJ Cycling Team, it is the new benchmark for aero road bikes.
Here is a detailed breakdown of its features and design philosophy:
Certified Aerodynamic Efficiency: Rigorous testing in the Silverstone wind tunnel validated an extraordinary13.6% reduction in drag compared to the previous Filante model. The comprehensive bike-and-rider system shows a4.5% improvement in aerodynamic resistance.
Tangible Speed Gains: The aerodynamic refinements translate to real-world performance gains. Riding at 40 km/h (24.9 mph), a cyclist saves a substantial14.15 watts of power. Over a 70 km course while maintaining 290 W of power, this results in a time gain of1 minute and 45 seconds.
Frame Materials and Weight: The frame uses a premium blend of Toray T800, T1100 and M46JB high-modulus carbon fibers, combined with Liquid-Crystal Polymer. This proprietary mix ensures high responsiveness and stiffness without compromising lightness.
Frame Weight: Approximately870 g (size M).
Complete Bike Weight: Starts at7.1 kg (Dura-Ace Di2 build), with top-tier configurations capable of reaching6.8 kg.
Increased Stiffness: The design achieves a 12.5% increase in theStiffness-to-Weight (STW) ratio, providing superior steering precision and a feeling of security at high speeds.
Integrated Aerokit System: This is a hallmark of the new design. The custom down tube profile works in conjunction with the Elite-developed$1100 Aerokit bottle and cages. This system acts as a "veritable spoiler," stabilizing airflow and reducing drag by over two-thirds compared to conventional systems, making the bikemore aerodynamic with the bottles in place.
F-Bar ID2 Integrated Cockpit: The carbon monocoque handlebar featuresTotal Cable Integration, concealing all brake and derailleur cables for maximum aero benefit and a clean aesthetic. It introduces theOptimized Ergonomic Flare (O.E.F.), with an orthogonal flare in the drops for better control and an aerodynamic riding position. The clamping hardware is fully hidden and UCI-compliant.
Redesigned Fork: The fork blades are wider (13.6% wider than the Cento10PRO) to move them away from the wheel and reduce turbulence. It features a more pronounced fork crown for superior torsional stiffness and a thin aerodynamic fin on the left leg to guide airflow around the disc brake caliper.
Rear Triangle and Versatility: The rear stays are inclined inward to optimize pedal dynamics. The frame is future-proof with aUniversal Derailleur Hanger (UDH) dropout and the option for a removable front derailleur support for a drivetrain setup (compatible with chainrings up to 56 teeth). It offers clearance for tires up to34 mmwide.
Custom Seatpost: The new seatpost has a slender, sharp profile for minimal air resistance. It is available with either anoffset or 15 mm setback and is designed to absorb vertical vibrations.
Shimano Di2 Integration: The Di2 battery is repositioned to the bottom bracket area to lower the center of gravity and improve stability.
AccuFit System: Wilier's fitting system is highly detailed, offering420 unique fitting configurations across its six frame sizes (XS to XXL). This is achieved by combining six frame sizes, seven handlebar spacers, five stem lengths, and two seatpost versions, with minimal 2 mm differences between configurations.
Race Geometry: The geometry is aggressive and race-focused, mirroring the Wilier Verticale SLR, with a low stack-to-reach ratio designed for an efficient, low riding position, maximizing performance on attacks, sprints, and climbs.