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The best starter bikes are in the 250-500cc class, that's kinda the whole point of having bikes that size. I wouldn't go much larger than that if you're learning, but some people can. I learned on a Suzuki Intruder 800cc, and I did fine on it. Yet when trying to teach my sister on the exact same bike she laid it down. She was fine, no injuries, but if she had done the exact same thing on a smaller bike then she probably wouldn't have ended up on the ground. So keep that in mind, a bigger bike will just amplify any mistakes you make while learning(and you will make some mistakes). That said, any 600-750 cruiser isn't too bad to learn on, something like a Honda Shadow. Or the smaller Kawasaki Vulcans. Vulcans range anywhere from 500cc to 2000cc depending on the years. Definitely wouldn't go over the 800 to learn on though. Harley even has the newer Street 500/750 if Harleys are your thing.
Anonymous
"I want more than like a 250 or 500cc? " Why do kids have to use "like" all the time? It completely changes the meaning.
You want more than 500cc for your first bike. In the UK you are limited to 125cc until you've passed your full motorcycle test. There's a reason.
Starting on something over 500cc is a good way to die young.
Bryan
I started riding on a 04 Suzuki Marauder Vz800, it was a great bike. In my opinion, most people can handle starting on a bike in that class. Some good options are Suzuki Vz800, C50, M50, Honda Shadow 750, Harley Street 750, and maybe a Indian Scout 60.
Another good option would be a dual sport or super moto. They are light, handle well, and have good power for their size. I have a Honda XR650L and It's awesome, only bad thing is it's too tall.
Anonymous
The best starter bikes are in the 250 - 500 class . If you want suggestions , you'll need to let us know what style of bike you're interested in . Do you want a standard ? , a dual purpose ? a cruiser ? or a sport bike ?
Personally , I recommend a dual purpose as they are the most tolerant to being dropped .
Usual
Get a cbr1000rr cant go wrong. Just call your mom and your girlfriend before hand as there will be not much left for you to say afterwords as the coroner is scraping you off the road with a spade and a wheelbarow. Good luck.