DOMINO QUICK THROTTLE HANDLEBAR GRIP UNIVERSAL DUAL SIDEDOMINO QUICK THROTTLE HANDLEBAR GRIP UNIVERSAL A quick throttle, often referred to as a "quick action throttle" or "quick throttle kit," is an aftermarket motorcycle accessory designed to modify the response of the motorcycle's throttle, providing a faster and more immediate reaction to the rider's input. This modification can result in quicker acceleration and improved responsiveness. Here are some key points about quick throttles for motorcycles: