Aprilia RS660 is a twin treat based on the V4 1100

https://www.motorcyclenews.com/news/new-bikes/aprilia-rs660/ via /r/motorcycles https://www.reddit.com/r/motorcycles/comments/drzeus/aprilia_rs660_is_a_twin_treat_based_on_the_v4_1100/?utm_source=ifttt