In the range 2017 Guerciotti introduced a new category of products for a less racing use and more sport. Guerciotti presents a new version of model Alero: Alero S. “S” stays for sport. A bicycle concept who is not dedicated for a target of racing or agonistic consumers, but dedicated to a new cathegory who face courses with long distance and long time who require a bike position more comfortable than the traditional position of a racing bike. Alero S is therefore the first frameset introduced by Guerciotti in the “Endurance” cathegory. Thanks to the EMDF we got a frameset with major distance bottom bracket-wheel axle, besides with a study of geometry such that the top tube is slightly shorter and the aheadset tube significantly higher (with minor steereing angle). The perfect study of these measures leads to obtain a more elongated frame and capable of being more stable and comfortable in dumps. Alero S, is built modifying the mode of assembling with the aim to realize anyway a stiff and performing frameset during the riding, but able to respond in a more elastic and progressive way as possible to the irregularities of courses and be more comfortable. The goal achieved is to reduce significantly the fatigue of the rider, allowing an higher performance in riding, as well as greater control driveability. In order to use the bicycle even in the courses characterized by pave or strade bianche, the construction of the frame Alero S has been studied in order to mount 28mm tires, so as to obtain the maximum performance from their bicycle. To get a product of this level has been crucial the cooperation with the professional Team CCC Sprandi that in the season 2016 has participated to numerous races in pave, including the most important Ronde Van Vlaanderen. The frameset Alero S is composed by the following composite materials: 70% 24Tons Intermediate Modulus with High Strength T700SC Carbon Pre-Preg 20% 30Tons High Modulus with High Strength T800H Carbon Pre-Preg 5% Special Liquid Crystal Polymer High Toughness Composite Pre-Preg 5% 3K High Impact Strength Carbon Pre-Preg.