Wilier Triestina presents its brand new Zero SLR. This bike is the flagship product of the entire Wilier collection: a super-light racing frame with disc brakes and fully integrated cables. A model designed and built to perform at its best in competitions and to climb even the most difficult and demanding climbs, our “Great Climbs“.
The Zero SLR comes chronologically and technologically after the Zero.7 and Zero.6 and, consequently, represents the perfect synthesis, in the form of a frame, of the concepts of lightness and total integration. A frame that is elegant, minimal and “simple” but, at the same time, contains a high degree of technological complexity, the result of years of research and experimentation of the Innovation Lab by Wilier Triestina.
All the features sought by the most demanding cyclists in the most technologically advanced racing bikes have been carefully studied and implemented: braking performance thanks to disc brakes, electronic transmission, aerodynamic efficiency, total integration of cables, stability and control at high speeds.
The bike manufacturer from Rossano Veneto, near Vicenza, wanted to do things in great style and for this reason has paid great attention to every detail of its vehicle. Let’s see below some of the salient features of the new Wilier Zero SLR.
The fork of the new Zero SLR has a total weight of about 340 grams (depending on the version) and, from the point of view of the shapes, is asymmetrical: the sheaths have different sections and you can see it by carefully observing the Zero SLR from the front.
The sheath that houses the brake caliper (for the disc brake) is reinforced with a larger section than the one free from the brake. This structural feature allows the fork to compensate, with the right balance, for the asymmetrical forces generated by disc braking, while maintaining excellent handling even during braking.
With a view to improving aerodynamics, the distance between the fork sheaths and the wheel has been increased, inspired by the development of the Wilier Turbine triathlon and chronometer bike. In doing so, all the contrasting turbulence generated in movement by the wheel and frame is reduced, improving aerodynamic penetration.
CHARACTERISTICS OF THE FIBRES USED
Usually the recipe for a monocoque frame is absolutely secret, and even more secret are the ingredients that go to compose the different layers of carbon.
On ZERO SLR have been selected carbon fibers of the highest quality, whose blend has been called HUS-MOD: a composition qualitatively superior to any type of material ever used by Wilier Triestina.
In addition to the HUS-MOD carbon, meshes with very high strength multidirectional fibres have been integrated to increase rigidity along all spatial coordinates, and meshes with Liquid Crystal Polymer to improve impact resistance and increase vibration damping.
On the ZERO SLR, thanks to a mix of carbon used, the particular positioning of the fibres and the construction technology, Wilier has managed to reach a level of lightness and rigidity of absolute level, improving the STW (Stiffness to Weight) value by 24% compared to the previous Zero.7.
INTEGRATION AND ESSENTIAL DESIGN
Among the trends most appreciated by bicycle manufacturers and the general public, there is the search for maximum aesthetic cleanliness. Since 2016, with the Cento10AIR, Wilier Triestina has been following this path (one of the first bike manufactures in the world), inserting the brake and control cables inside a monocoque fold integrated in the frame.
The Zero SLR further enhances this feature because total integration is associated with a record weight of frame, fork and handlebar. The various elements that allow integration have been re-engineered and evolved: the Zero integrated handlebar, the handlebar spacers in composite material and the section of the head tube of the frame.
Let’s see them in detail below.
In addition to its very low weight (330 grams for the 100×42 size), the new Zero integrated carbon monocoque handlebar holds the brake and control cables inside, directing them inside the frame. A very essential design, with rounded lines, to ensure maximum ergonomics in the handle even in the most difficult driving conditions.
The design of the head tube combined with the special size of the bearings, allows the sliding inside the frame of the transmission and control cables from the cavity of the carbon monocoque handlebar. There are no cable entry holes on the down tube, so everything will flow internally. This choice was made primarily to safeguard weight, integrity and rigidity as well as to underline the minimalist style sought by designers at the design stage.
The transmission of power to the rear wheel must not suffer dispersions that cause a loss of pedalling efficiency: to meet this need, the rear wagon has been designed asymmetrically, with the left sheath slightly more inclined upwards than the right one. This avoids lateral skidding due to the force exerted by the cyclist on the chain.
SPEED RELEASE THROUGH PINS
Another new element in the Zero SLR is the Mavic Speed Release through pins. These pins allow the wheel to be removed from the frame without having to remove the pin completely from the wheel hub. This solution significantly reduces the time it takes to remove and fit the wheel, especially during the race.
The choice of the Speed Release pin was also made with a view to saving weight (only 85 grams per pair) and safeguarding the integrity of the frame. In fact, when the wheel is tightened to the optimum torque, the integrated control system comes into operation, which prevents the supply of extra forces that could ruin the coupling bed and therefore the frame or fork.
SEATPOST AND FASTENING
For the Zero SLR, a new type of carbon monocoque seatpost has also been produced with a design exclusively owned by Wilier Triestina.
The shape is slim to contain the weight and recalls the truncated tail profiles of the aerodynamic models of the Wilier Triestina range – such as the Cento10PRO and the Cento10NDR.
The seatpost is available in two different geometries: one with a 0mm setback and the other with a 15mm setback, both compatible with the Ritchey 1-Bolt seat attachment.
The seatpost is fixed to the frame by means of an expander housed inside the horizontal tube. A solution that rewards both aesthetics and aerodynamics. The sections of the tubes in the various sizes are designed in such a way that rigidity, riding quality and comfort are the same on every different size of frame produced: on all the 6 sizes the same riding sensation results.