Koso Rx-2 NR GP Style Tachometer Koso has over 30 years of expierence in designing and manufacturing high quality products. They are known for their product's quality, reliability and capability. The Koso Rx-2Nr GP Style Speedometer will fit your every need. It's simple style gives your bike a sleek look. Features Features an 80mm needle driven by a stepper motor that's easy to read at high speed Multifunction feature gives you the necessary information needed to monitor your engine Illuminated background