Speedometer Calibrator | Ford Bronco/Bronco (2 Door)/F-150/F-250/F-350

Rough Country’s Speedometer Calibration Device is the precise solution for Ford Bronco (2-Door), F-150, F-250, and F-350 owners who lift their ride and install larger tires. It re-aligns your speedometer with the new tire size by updating the vehicle’s ECM, not just the dash readout.

• Compatibility: Designed for Ford Bronco (2-Door), F-150, F-250, and F-350—especially for lifted builds using larger tires.
• ECM Update: Reprograms the engine control module to ensure accurate speed readout, correct shift points, and reliable electronic stability control.
• Accurate Speedometer Calibration: Adjusts the speedometer to reflect actual road speed after increasing tire size from stock.
• Reset to Stock: Built-in function to return the system to factory settings for service or resale.
• Ease of Use: Intuitive setup process with clear prompts, making calibration straightforward without guesswork.
• Warranty: Includes a 1-year warranty for peace of mind.

This calibration helps you maintain accurate speed readings and preserves the performance of your vehicle’s electronics. By updating the ECM, it supports proper shift points and keeps electronic stability control operating as intended, even with bigger tires. Ideal for daily driving, highway cruising, and towing scenarios on lifted Ford trucks, this device ensures your speedometer reflects reality so you can drive confidently and avoid discrepancies between your dash readout and actual speed.