The first X model was the RSV4 X, announced in 2019 to mark 10 years of Aprilia's superbike. The RSV4 X made use of a carbon fiber fairing, a lightweight fuel tank, and Brembo GP4-MS billet callipers.

Honda’s cooking up a big-bore CB1000F SE, and the concept will be debuted at this August’s Suzuka 8 Hours! Aprilia’s extreme “X” Range of race-ready variants look to soon be joined by an “X GP,” ...