I've played XMoto for Android and I found it to be a lot of fun. It was simple enough for beginners to get the hang of it and challenging enough to make it exciting. Aside from XMoto, i haven't seen other motorcycle games that struck my fancy. Are there any other fun motorcycle games for Android?
Well i don't know many but just trying searching motor on the app store to see if you can find any more.
Asphalt Moto 2 (https://play.google.com/store/apps/details?id=com.icloudzone.AsphaltMoto2) Speed Moto2 (https://play.google.com/store/apps/details?id=com.zhuodao.speedmoto2) Trial Xtreme 3 (https://play.google.com/store/apps/details?id=com.x3m.tx3) I don't know what to recommend to you but these three have some good ratings. Maybe you'll like them. They're all free, by the way.
I only play Highway Rider on my Android Phone, it is an excellent top score builiding game, and is of only 40 MB in size. You can download it for free from the Google Play Store.