Aprilia brought its fairing with deflectors used by Lowes, while Yamaha used the "rounded" fairing.
2017 MotoGP - In the beginning it was just Suzuki using a wraparound fairing with small deflectors inside. It was the only one to use that pre-eminent trick while all the other houses, after many attempts and studies until the debut in Losail, had well thought of setting aside these famous "hulls with wings" to continue their "homework", Ducati above all with its “hammerhead” fairing.
During the event in Jerez de la Frontera, however, Yamaha used the rounded fairing with the deflectors at the height of the bellies to better convey the air.
Romano Albesiano's men had shown for the first time a fairing with built-in deflectors on the front fairing during the Phillip Island tests. Aleix Espargaro tried it by declaring that the advantages were there, but also the disadvantages - the top speed dropped significantly - and that therefore in the end it would have to be studied further in Noale.
However, he reappeared on Sam Lowes' bike. An understandable choice: the Englishman in fact did not yet have such high value performance ambitions as Aleix was intent on seeking pure performance, so he can obviously push more even on very interesting development elements such as the hull with wings.
Will it work? Despite some problems of acclimatisation and speed, Romano Albesiano and the Aprilia troops have always spoken very highly of the sensitivity in Lowes' development. In a circuit like that of Jerez, where a lot of support is needed in insertion and mileage, such a fairing could help.