PZRacing Geartronic Zero GT310-Y4 Yamaha Plug and Play Digital Gear Indicator Highest quality and fastest gear indicator on the market, with 200ms gear indicating response time! 100% Plug and Play Unit, no splicing or wiring work needed. Complete with simple installation instructions. Unlike others, these feature a full LCD display with 6 different backlight colors you can choose from the setup menu. Made in Italy. 100% weatherproof and 2-year no hassle replacement warranty. Used by many top level racers in various European championships. Make the right choice and get the best for your Yamaha!