There is an aftermarket throttle extender so you can use more of your hand instead of just your thumb.
I plow with my ATV and my glove got fouled on the throttle extension lever extension. I got to the end of a neighbor's driveway and the more I squeezed the front brake the faster I went. I yanked my right hand off of the grip and help it up like a bronc rider in a rodeo! The extension levers are great for long rides or if you have carpal tunnel in your right hand.
The reason for levers VS twist grips is on a bike your lean to turn and on ATVs and snowmobiles you steer with the Handle bar.
A friend of mine that has been riding bikes for over 45 years had a time getting used to riding an ATV.
