> Everyone runs liter (1000cc) bikes That is flatly not true. I watched several of this year's races from the trackside. I live on the Isle of Man. There are

> Everyone runs liter (1000cc) bikes That is flatly not true. I watched several of this year's races from the trackside. I live on the Isle of Man. There are multiple categories, and I watched the 600cc supersports and sidecar races, also a 600cc category. The classes are listed here: https://the-race.com/motorcycle-racing/2023-isle-of-man-tt-guide-and-schedule/ https://the-race.com/motorcycle-racing/2023-isle-of-man-tt-g... Don't forget that a lot of riders graduate from the MGP to the TT. The Grand Prix is on the same course and has 200cc, 400cc and singles categories: https://manxgrandprix.co.uk/latest/page/classes-confirmed-for-centennial-manx-grand-prix/ https://manxgrandprix.co.uk/latest/page/classes-confirmed-fo... It's an amazing experience, but your attempt to oversimplify it turns it to something that is not the truth.