This is a hack for (at least) infinite lives:
You must start Cheat Engine and search in the windows list for the title of the game. Then you scan while the level is pausing for 4. After that, fall with your bike and when you have 3 lives, scan next for 3. Fall again and scan next for 2 and then fall again and scan next for 1. There msut now ONLY one result of this scan. Change the value of this adress to 999 and see, what will happen.