For the Custom builder that wants more than the average, Dakota Digital developed a unique and very complete series of precision digital round instruments. These digital instruments are available as speedo, tacho, oil pressure, oil temperature, voltage and head temperature meter. Speedometers are available in 3 3/8" (86mm) as well as in 2 1/16" (52mm). Tachometers are 3 3/8" (86mm) diameter. Oil pressure, oil temperature, voltage and cylinder head temperature meters are 2 1/16" (52mm) diameter and fit most aftermarket mounts. Sensors must be ordered separately. Installation of speedo's, tacho's and information centers on 2002 to present V-Rod, 2004 thru 2013 Sportster, 2004 thru 2010 Softail, 2004 thru 2011 Dyna and 2004 thru 2013 Touring requires the separate purchase of ZPN 744267 Break-Out box for the J-1850 Databus. Not suitable for later models with the CAN-Bus (HD-Link) system.