Speedometer Calibrator | Inline | Ram 1500/2500/3500 2WD/4WD (2019-2023)

Restore Speedometer Accuracy for Larger Tires: Rough Country's Speedometer Calibration Device is engineered for lifted vehicles with oversized tires, reprogramming your speedometer to deliver precise, true-speed readings.

Seamless Plug & Play Installation: A simple plug and play connection through your vehicle's Diagnostic Link Connector Port recalibrates your speedometer to match your new tire size, no complex tools or programming knowledge needed.

Enhanced ECM Shift Point Adjustments: Updates your vehicle's ECM to optimize transmission shift points for smoother shifting tailored to your new tire configuration.

Maintains Electronic Stability Control Performance: Recalibrates your Electronic Stability Control system to retain factory-intended handling and safety.

Convenient Return to Stock Settings: An easy reset feature restores stock settings anytime, ideal for vehicle servicing.

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