Speedometer Calibrator | Inline | Ford F-250/F-350 Super Duty 4WD (2011-2016)

Rough Country’s Speedometer Calibration Device is an inline, plug‑and‑play tool for Ford F-250/F-350 Super Duty 4WD trucks. Designed for lifted builds and tire upgrades, it reprograms the speedometer to match the actual road speed while keeping the vehicle’s ECM and stability systems in sync.

• Compatibility: Specifically designed for Ford F-250/F-350 Super Duty 4WD models from 2011–2016.
• Plug‑and‑Play Installation: Connects directly to the Diagnostic Link Connector (DLC) port for a straightforward setup that minimizes downtime.
• ECM Update: Beyond changing the in‑dash readout, it updates the engine control module to preserve accurate shift points and proper electronic stability control.
• Recalibration for Larger Tires: Gets your speedometer aligned with the actual speed after upgrading tire size, reducing discrepancy on the gauge.
• Reset to Stock: Built‑in function to reset the speedometer back to stock before servicing or maintenance.
• Warranty: Includes a 1‑Year Warranty for added peace of mind.

This device solves the common issue of speedometer inaccuracy that comes with larger tires on a lifted Ford Super Duty. By ensuring the ECM reflects your true speed, it helps maintain proper shift points and keeps electronic stability control functioning as designed. It’s a practical, affordable way to preserve performance and safety after tire size changes, with a simple setup and a straightforward reset option when servicing is needed.