TEGIWA Shift Light. You probably dont use your existing rev counter, which is not surprising given how difficult it is to see when you most need it. A good progressive RPM display can give you what you dont have... a gauge in your peripheral vision showing the range of RPM you need to see. It gives you a reference for improving performance and building on skills. For example, maintaining staging RPM while concentrating on race start, smooth anticipated shift points and maintaining corner entry pace. It features: super bright wide angle lights. The display range is programmable - you can set when each light set colour is displayed. Installation and setup instructions are included.