Speedometer Calibrator | Multiple Makes & Models (Jeep/Ram)

Restore Accuracy After Bigger Tires: Rough Country's Speedometer Calibration Device puts the finishing touch on your lifted ride, ensuring your speedometer displays true readings for larger tire setups.

Plug-and-Play Simplicity: Connect the device to your vehicle's Diagnostic Link Connector Port and in minutes your speedometer, shift points, and stability control are all recalibrated to factory precision.

Optimized Performance and Control: Updates your vehicle's ECM to maintain accurate shift timing and reliable electronic stability control.

Built-In Diagnostic Reader: Reads and clears diagnostic trouble codes to help manage "check engine" and "service" lights, and allows you to return to stock settings whenever needed.

Warranty: Backed by Rough Country's 1-Year Warranty.