{"product_id":"bicicletta-da-strada-wilier-triestina-filante-slr-id2-ultegra-di2-12v","title":"Wilier Triestina Filante SLR ID2 Ultegra DI2 12S Road Bike.","description":"\u003cp\u003e\u003cstrong\u003eThe photo is for color representation only; for specifications, please refer to the details below.\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eSpeed, at Wilier, is not just a measurement: it is an ideal, a philosophy deeply rooted in time. For Wilier Triestina, speed is not merely a technical datum or a number in a wind tunnel: it is Culture.\u003cbr\u003eAn approach that combines engineering research, athlete experience, and sensitivity to design. A genuine passion for cycling and for work, born from artisan craftsmanship and a firm commitment to offer future generations an absolute and pure cycling experience.\u003cbr\u003eFilante SLR ID2 embodies this vision. Not a simple update, but the most advanced expression of a tradition that began with the first Wilier aerodynamic models, passed through experiences like Supersonica SLR, and now redefines the boundaries of on-road efficiency. Every detail is created with a clear objective: to put the athlete at the center, enhancing their position, sensations, and real-world road experience, to allow them to become faster in the real world.\u003c\/p\u003e\n\u003cp\u003eAERODYNAMIC DEVELOPMENT: BIKE AND CYCLIST, ONE ENTITY\u003cbr\u003ePure aerodynamic efficiency is not enough if the real-world result does not meet our quality standards for ride. When we decided to rethink Filante SLR, we asked ourselves a simple but decisive question: how can we raise the performance bar even higher? Together with the technical staff of Groupama FDJ – Cycling Team, we analyzed every detail to understand\u003cbr\u003ehow far we could push ourselves.\u003cbr\u003eAfter the achievements with the Supersonica SLR, it was clear that expectations were very high, especially on the aerodynamic front. The goal? To create a bike capable of ensuring maximum efficiency even outside time trials. An ambitious challenge, which contained a paradox: combining extreme aerodynamics with lightness, responsiveness, and ride quality at the same time.\u003cbr\u003eJust like with Supersonica, we didn't stop at the frame. We studied the entire racing ecosystem: complete bike, components, accessories, and put the most important element at the center: the athlete himself. Because the aerodynamics of the bike alone are not enough: what really matters is real speed, which for the cyclist translates into unique sensations and superior performance on the road.\u003cbr\u003eBut to develop the new Filante, we did not rely solely on racing experience: we used the most advanced CFD simulations.\u003cbr\u003eLike all aerodynamic frames developed by our Innovation Lab, Filante SLR ID2 was conceived following a precise design process, with well-defined stages over time. The project brief is digitally translated into a 3D model composed of the frame, fork, and handlebar. A set of components that is virtually divided into thousands of small cells called computational mesh.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAll of this serves to subject the design idea to a preliminary analysis using CFD software.\u003cbr\u003eThis software - by solving the Navier-Stokes equations - virtually simulates and describes the behavior of a fluid (air in our case) around an object. Once the object is defined, the physical and environmental conditions in which the object must be analyzed are decided.\u003cbr\u003eIn our case, air speed is the most important element. At this point, the software calculates how the air moves over the surface of each cell of the mesh. The resulting output defines how aerodynamic a 3D model is. If the results are not as expected, the 3D model is remodelled, improving shapes where possible, trying to optimize flows and thus reduce aerodynamic drag. All of this in theory.\u003cbr\u003eIn practice, it is all more complex. One of the first obstacles is computational power: during a CFD simulation, the computer must solve billions of small mathematical equations - one for each mesh cell - in order to best simulate air movement. This requires extremely powerful computers, equipped with hundreds of processors working in parallel. CFD simulations are therefore very expensive but allow for great freedom of experimentation: they allow focusing on the improvement of many small details, which in the end - summed together - make the real difference, leading to a substantial evolution in product performance.\u003cbr\u003eThe initial areas of intervention concerned the leading edge, which is the set of surfaces that first interact with the airflow and critically influence its behavior. The analysis focused sequentially on the fork, head tube, handlebar, down tube, and seat post, optimizing geometries and profiles to reduce turbulence.\u003cbr\u003eA correctly designed leading edge allows for a reduction in aerodynamic drag and keeps the laminar flow adhering to the profile for longer, with a clear improvement in overall efficiency.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMORE DATA, LESS DRAG: THE FORK'S NEW AERODYNAMICS\u003c\/strong\u003e\u003cbr\u003eFor the fork alone, we designed and analyzed various 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 using CFD simulations, considering different wind incidence angles to reproduce real-world usage conditions. The process required three times the number of CFD simulations used in the development of Supersonica SLR, resulting in an exponential increase in the volume of data to be processed.\u003cbr\u003eThis systematic approach allowed for progressive refinement of the geometries, leading to a completely new solution: a fork characterized by an external NACA profile and a flat internal profile, designed to minimize interactions with the wheel and tire and maximize aerodynamic stability.\u003cbr\u003eIn designing the new fork, we paid particular attention to the head cone.\u003cbr\u003eFrom the experience gained with Verticale SLR, we learned that a steeper inclination allows for more homogeneous carbon lamination, capable of increasing stiffness and, at the same time, reducing overall weight.\u003cbr\u003eWith Filante SLR ID2, we pushed this concept even further: the even more pronounced cone ensures greater torsional stiffness and superior stress resistance, improving steering precision in all conditions.\u003cbr\u003eThe left dropout integrates a subtle aerodynamic fin that brushes the disc and wraps around the brake caliper: a partial fairing already successfully tested on Supersonica SLR, now further refined. Finally, the thru-axle clamping bushing has been completely integrated into the right dropout:\u003cbr\u003ea solution that combines aesthetic elegance, clean lines, and a tangible benefit in terms of aerodynamics and practicality.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTHE HEAD TUBE: SLIM, CLEAN, FAST\u003c\/strong\u003e\u003cbr\u003eThe head tube has been further improved to allow air to flow more smoothly and efficiently.\u003cbr\u003eThe leading edge remains faithful to the previous version, but the profile now develops into more tapered and slender shapes, capable of further reducing drag.\u003cbr\u003eAs always, at Wilier, technology meets elegance: brake and control cables are channeled directly from the handlebars into the head tube, creating a total integration that combines aesthetic cleanliness, aerodynamic performance, and unparalleled artisanal attention to detail.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNEW F-BAR ID2 HANDLEBAR\u003c\/strong\u003e\u003cbr\u003eThe Filante SLR ID2 comes with the new F-Bar ID2, an aerodynamically optimized cockpit completely redesigned in collaboration with the technicians and athletes of the Groupama – FDJ Cycling Team. After developing and testing nine types of titanium-printed bends, we defined the final O.E.F. (Optimized Ergonomic Flare) version. This is an orthogonal flare of 3 cm between the upper and lower grip, which, unlike other handlebars with differentiated widths on the market, does not compromise the ergonomic studies designed by transmission control manufacturers.\u003cbr\u003eAn absolutely exclusive solution that provides the cyclist with greater control in the drops, a more compact and aerodynamically efficient position, and a natural and comfortable grip. The control area features a slight upper rise that improves forearm support in the stretched position, increasing comfort and stability during long rides without sacrificing stiffness.\u003cbr\u003eIntegration with the frame has been optimized by lowering the head tube and introducing new top covers and concave spacers that increase the contact surface, improve responsiveness, and ensure aesthetic continuity, while the convex shape of the curve reduces the height difference between the handlebar and top tube, improving aerodynamics.\u003cbr\u003eFor the first time on a Wilier product, the handlebar fixing hardware is completely hidden, benefiting aesthetics, protection from dirt and sweat, and aerodynamic performance. Filante SLR ID2 is also compatible with V-Bar, Z-Bar, and F-Bar ID1 handlebars.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDOWNTUBE AND AEROKIT, THE MOST COMPLEX CHALLENGE\u003c\/strong\u003e\u003cbr\u003eThe downtube, always one of the most complex areas from a design perspective, has been developed with a precise objective: to have minimal aerodynamic drag and to reduce the exposure of water bottles to the air as much as possible.\u003cbr\u003eTo achieve this result, we chose a dual-section solution. The upper part, very thin and shaped according to a NACA profile, works close to the head tube to ensure maximum aerodynamic penetration. The lower part, on the other hand, is wider and more enveloping, designed to incorporate and shield the water bottles, reducing the turbulence that traditionally occurs in this area.\u003cbr\u003eFrom the very first tests, even using round water bottles and traditional bottle cages, the design proved to offer a clear improvement in performance. We decided to push further for greater integration and to further reduce air drag. This is where the Aerokit project took shape, a system of custom water bottles and bottle cages, with a tapered profile and completely integrated into the frame, which acts as a kind of spoiler capable of making the airflow cleaner and smoother.\u003cbr\u003eCFD simulations immediately confirmed our intuition with unequivocal results. With a round water bottle combined only with the Aerokit base, aerodynamic drag is reduced to less than half compared to the Filante SLR ID1. With the complete Aerokit, drag is reduced by even more than two-thirds.\u003cbr\u003eIn the CFD visualizations, the analyzed section clearly shows how the new downtube, combined with the integrated system, generates an extremely more organized flow within the main triangle: the turbulence-free area, represented in red, is much more extended on the Filante SLR ID2, highlighting a concrete technological leap in terms of aerodynamic efficiency.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAERODYNAMIC SEATPOST AND NEW SHIMANO DI2 BATTERY HOUSING\u003c\/strong\u003e\u003cbr\u003eDesigning a truly aerodynamic seatpost is an exercise in engineering precision. An seemingly simple component becomes a difficult puzzle to solve and crucial for the overall efficiency of the bike: its impact on aerodynamics is not limited to the frontal surface, but is amplified through interaction with the cyclist's alternating leg movement.\u003cbr\u003eWith the experience gained in developing the Supersonica SLR, we already had the right formula: a balance between aesthetics, lightness, and comfort. The new Filante SLR ID2 seatpost stems from this recipe, with a thin and sharp profile (38 mm x 16 mm), which optimizes aerodynamic penetration without compromising stiffness and vibration absorption. CFD tests confirm it: the new section generates significantly less turbulence than the previous version, resulting in a cleaner and more stable airflow around the frame-cyclist system, a central element in the development of Wilier products. This design choice also led us to rethink the placement of the Shimano Di2 battery, historically located in the seatpost. With such a slender design, it was necessary to find an alternative and more efficient solution. The answer came by moving the battery to the bottom bracket shell, enclosed in a resin case fixed with two screws.\u003cbr\u003eThe advantages are immediate and concrete:\u003cbr\u003e• Accessibility: the battery can be checked or replaced in a few moments, without removing the seatpost or changing the saddle height.\u003cbr\u003e• Lower center of gravity: the new position helps to lower the bike's center of mass, in synergy with the lowered Aerokit. The result is a more stable, precise, and fluid bike at high speeds.\u003cbr\u003eFinally, a design detail that encapsulates the project philosophy: the protective rubber cap for the seatpost clamping mechanism is no longer protruding, but flush with the frame. A clean and functional solution that enhances the continuity of the top tube's lines and emphasizes attention to detail, a perfect blend of function and aesthetics.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eREAR DROPOUTS: A SILENT REVOLUTION\u003c\/strong\u003e\u003cbr\u003eWe chose to preserve the family feeling with the previous Filante, maintaining wide rear dropouts inserted into the seat tube through a broken line, capable of giving the frame a decisive character when viewed from behind.\u003cbr\u003eTo a superficial eye, they might seem similar to the ID1 version, but in reality, they have been redesigned in every detail. The analyses of the dynamic interactions between the dropouts and the cyclist's leg movement during pedaling led us to an unexpected solution: tilting the dropouts inwards by 2.5°. This seemingly counterintuitive choice showed clear benefits in CFD simulations.\u003cbr\u003eIn the comparison graphs, in the dedicated section, it is clear how the combination of the new lowered water bottle position and the redesigned dropouts generates a cleaner and more regular flow, with a drastic reduction in turbulence. Once again, the optimization of aerodynamic flow is born by putting the cyclist at the center: this solution allows us to further increase speed while maintaining the same watts produced by the cyclist.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePOWERMETER MAGNET HOUSING: AERODYNAMICS IN EVERY DETAIL\u003c\/strong\u003e\u003cbr\u003eThe search for marginal gains has prompted us to rethink a detail often overlooked: the position of the powermeter magnet.\u003cbr\u003eWe designed a dedicated recess on the drive-side chainstay, intended to optimally house the magnet. Once installed, it is protected by a flush-applied adhesive, making it practically invisible to airflow and perfectly integrated into the frame design.\u003cbr\u003eEven if the powermeter is not used, applying the adhesive still provides the same aerodynamic benefits and aesthetic cleanliness of the frame.\u003cbr\u003eThis solution, in addition to improving aerodynamics, ensures effective protection of the magnet from accidental impacts or chain drops, increasing the overall reliability of the system.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003cstrong\u003eTHE VERDICT FROM THE SILVERSTONE WIND TUNNEL: MEASURABLE PERFORMANCE, REAL ADVANTAGES\u003c\/strong\u003e\u003cbr\u003eThe new Filante SLR ID2 is the result of a meticulous development process, with numerous test sessions and data validation in the prestigious Silverstone wind tunnel. Every step was designed to go beyond CFD simulation, translating the project into concrete and measurable results.\u003cbr\u003eThe verdict was unequivocal: reality surpassed simulation. In the last test session, the drag reduction of the bike alone reached -13.6%, exceeding the -12% estimated by CFD simulation. Even in the bike + rider system, a central concept for Wilier, the data surprised: from -3.6% CFD to -4.5% real. Data showing how the design of the Filante SLR ID2\u003cbr\u003eachieves its full potential in real-world usage conditions.\u003cbr\u003eBut we didn't stop at internal validation. We compared our bike directly with five top-of-the-range models from major World Tour competitors. Only one managed to come close: compared to the others, the Filante SLR ID2 recorded an average CDA better by 2.42%.\u003cbr\u003eA difference that, at professional cycling speeds, means seconds gained, energy saved, and concrete advantages when it really matters: in a race.\u003cbr\u003eThe Filante SLR ID2 is not only the result of visionary design: it is a race-proven bike, designed to win and capable of transforming science into concrete advantages for the athlete.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAERODYNAMICS AND LIGHTNESS, THE KEY TO PERFORMANCE\u003c\/strong\u003e\u003cbr\u003eLightness has remained one of the key pillars to ensure high-level performance. In the design of the new Filante SLR ID2, this principle has always been a focus. The result is a bike that perfectly combines aerodynamic efficiency and low weight, an essential combination in modern cycling.\u003cbr\u003eThe combination of aerodynamics and lightness enhances responsiveness and efficiency, reducing fatigue and optimizing power management. Performance thus translates into a concrete advantage for the bike-cyclist system, making the Filante SLR ID2 extremely versatile, from the toughest climbs to long flat rides.\u003cbr\u003eIn tests conducted on the bike alone, at 40 km\/h there is a saving of 8.9 watts with standard water bottles and bottle cages, and 9.47 watts with the Aerokit; values that at 50 km\/h increase to 19.13 watts and 21.20 watts respectively. The effectiveness becomes even more evident considering the bike-cyclist system together: at 40 km\/h the advantage for the rider is 11.51 watts with standard water bottles and 14.15 watts with Aerokit, while at 50 km\/h the savings rise to 24.55 watts and 28.80 watts.\u003cbr\u003eTranslated into real performance, this means that in a 70 km time trial at an average of 290 watts, the cyclist would take 1 minute and 25 seconds less with the new Filante SLR ID2 equipped with standard water bottles, and even 1 minute and 45 seconds less with the Aerokit.\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTHE CULTURE OF SPEED, WILIER TRIESTINA'S CREED \u003c\/strong\u003e\u003cbr\u003eThe Filante SLR ID2 represents the evolution of an idea: to give the cyclist the fastest version of themselves. From the NACA profiles of the fork to the new Aerokit, from the redesigned seat post to the perfect integration of the Shimano Di2 battery, up to the geometries developed with World Tour champions. Every element converges towards a precise objective: to offer scientifically validated performance, measurable advantages and authentic sensations on the road. \u003cbr\u003eBut the Culture of Speed goes beyond numbers. It is a philosophy that has guided our way of building bicycles for 120 years. This culture guides every project, pushing us beyond performance for its own sake towards a conscious research that combines experience, ingenuity and technology. Our goal is perfect movement: that harmonious balance between cyclist and bicycle where strength, precision, aesthetics and function merge. \u003cbr\u003eWith the Filante SLR ID2, we transform data into emotions. Numbers do not represent the finish line, but the starting point for creating bicycles that truly communicate with those who ride them. This is how we remain faithful to a promise that has always accompanied us: to create the means to make you the fastest version of yourself. \u003c\/p\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eFrame\u003c\/strong\u003e: FILANTE SLR ID2 - CARBON MONOCOQUE HUS MOD + LIQUID CRYSTAL POLYMER + AERO KIT (bottles)\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eFork\u003c\/strong\u003e: FILANTE SLR ID2 - CARBON MONOCOQUE HUS MOD + LIQUID CRYSTAL POLYMER\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eHandlebar\u003c\/strong\u003e: F BAR ID2 INTEGRATED CARBON CUSTOM MADE + GARMIN\/WAHOO MOUNT\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eHandlebar weight\u003c\/strong\u003e: 340 g +\/- 5%\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eHeadset\u003c\/strong\u003e: CUSTOM SUPERSLIM 1-1\/4\" UPPER BR | FSA MR137 1-1\/4\" LOWER BR\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eShift Levers\u003c\/strong\u003e: SHIMANO ULTEGRA Di2 ST-R8170\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eBrakes\u003c\/strong\u003e: SHIMANO ULTEGRA Di2 R8170\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eRotors\u003c\/strong\u003e: SHIMANO RT-CL800 160 \/ 140\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eFront Derailleur\u003c\/strong\u003e: SHIMANO ULTEGRA Di2 FD-R8150\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eRear Derailleur\u003c\/strong\u003e: SHIMANO ULTEGRA Di2 RD-R8150\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eCrankset\u003c\/strong\u003e: SHIMANO ULTEGRA FC-R8100 50-34T\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eBottom Bracket\u003c\/strong\u003e: SHIMANO BB9241 - PRESSFIT 86.5X41\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eCassette\u003c\/strong\u003e: SHIMANO ULTEGRA CS-R8101-12 11-30T\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eChain\u003c\/strong\u003e: SHIMANO ULTEGRA CN-M8100\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eTires\u003c\/strong\u003e: VITTORIA CORSA PRO 700X28c\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eSaddle\u003c\/strong\u003e: PROLOGO SADDLE NAGO R4 PAS TIROX 137mm\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eSeatpost\u003c\/strong\u003e: WILIER FILANTE ID2 CARBON CUSTOM MADE -0 mm\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eAxle\u003c\/strong\u003e: MICHE THRU AXLE LIGHT 12X119.5F 12X166.5R\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eFrame weight\u003c\/strong\u003e: 860 g +\/- 2%\u003c\/div\u003e\n\u003cdiv data-v-3180b262=\"\"\u003e\n\u003cstrong data-v-3180b262=\"\"\u003eFork weight\u003c\/strong\u003e: 380 g +\/- 5%\u003c\/div\u003e","brand":"WILIER TRIESTINA","offers":[{"title":"M \/ F29 Eclipse Black - Glossy","offer_id":57795355050368,"sku":"E666LDO3F29","price":8990.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0788\/4279\/0170\/files\/filanteid2_f29_carbongalaxy_lato_white.webp?v=1775217182","url":"https:\/\/www.diliecicli.it\/en\/products\/bicicletta-da-strada-wilier-triestina-filante-slr-id2-ultegra-di2-12v","provider":"Diliè Cicli","version":"1.0","type":"link"}