The engine size has increased to 1099cc Aprilia has updated the electronics and instrumentation Design inspired by the RS 660 Spy shots from November 2020 gave away quite a bit about the design of the 2021 RSV4. The company has revealed the 2021 RSV4 and RSV4 Factory and there’s a lot more than just a styling update. 2021 Aprilia RSV4 design Usually, it’s the lower capacity models that borrow styling elements from the flagship models, but in this case the RSV4 takes inspiration from the middleweight RS 660. Aprilia says that this design has an “extremely low aerodynamic resistance coefficient” and increases the air pressure in the airbox. For 2021, the winglets have also been integrated into the fairings. The bike also sports the LED headlights, which feature additional cornering lights. Additionally, it features revised ergonomics, owing to the new fuel tank and seat, and Aprilia say it's more “natural and relaxed”.