Speedometer Calibrator Inline Ford F-250/F-350 Super Duty 4WD (2011-2016) Rough Country Drivetrain & Differentials - Transmission Electronics - Transmission Control Module or you can wire these

or you can wire these directly into the factory upfitter switches for an OEM look

Whether you're navigating dusty trails or keeping cool on hot days

3 inch of 1 1/4 inch-12 left hand threads on the shank

2019 Ram 1500 Classic Big Horn Standard Cab Pickup

Speedometer Calibrator Inline Ford F-250/F-350 Super Duty 4WD (2011-2016) Rough Country Drivetrain & Differentials - Transmission Electronics - Transmission Control Module or you can wire thesePut the finishing touch on your lifted vehicle with Rough Country's Speedometer Calibration Device! This easy to use Speedometer Calibrator helps you quickly and easily reprogram your vehicle's speedometer to match the output of your larger tires. Your vehicle's computer is designed to track the speed based on your stock tire height. When upgrading to larger tires, there will be a discrepancy between your actual speed and the readout on your