Universal 2.5" Black Mini Motorcycle Tachometer Gauge w/ Black Face (1:4 Ratio) Color/Finish: Black Tachometer has a bright white LED backlight Dimensions: 2 1/2" Face Diameter, 2 1/8" Tall Housing The tachometer ratio is 1:4 which is intended for Honda CB750's and other large CC Metric bikes Please be sure of stock gauge setup before ordering.