the twist works better on a bike because in a turn you lean alot instead of turning the bars, when you turn the bars on an atv your hand naturally twists so if not used to it you can give throttle when you dont want to. ive had both throttles on quads and owned a bike also, and i like thumb on a quad and twist on a bike. for a new person on a twist i recommend a normal twist, not a 1/4 turn one, its more forgiving if you accadently twist it when jumping or in a wheelie. my input.