The factory tachometer is often incorrect and does not accurately display the actual RPM your engine is operating. We're proud to offer high quality tachometers from great brands such as Autometer, Ford Performance, SVE, and more! Available in different background colors to match your interior gauges and monitor up to 10,000 RPM! LMR is your #1 source for Mustang Tachometers! The tachometer is one of the most important gauges to monitor your engines vital signals.