Speedometer Calibrator | Inline | Toyota 4Runner 4WD (2019-2023)

Rough Country’s Speedometer Calibration Device is an inline, plug‑and‑play solution designed for Toyota 4Runner 4WD models from 2019 to 2023. It helps lifted rigs with larger tires keep the dashboard reading accurate and trustworthy.

• Compatibility: Specifically engineered for Toyota 4Runner 4WD (2019–2023) to ensure a precise fit with your tire and lift setup.
• Plug‑and‑Play Installation: Connects directly to your vehicle’s Diagnostic Link Connector Port for straightforward setup—no complex reprogramming required.
• ECM Update: Updates your vehicle’s ECM so shift points and electronic stability control function correctly after tire size changes.
• Speedometer Accuracy: Reprograms the speedometer to reflect true speed when using larger tires, aligning your readout with real-world performance.
• Reset to Stock: Built‑in function to revert the speedometer back to stock settings before servicing your vehicle.
• Warranty: Includes a 1‑year warranty for added peace of mind.

This device delivers an affordable, accurate calibration with an intuitive setup, helping you maintain safe, predictable handling after a tire upgrade. By aligning the speedometer with actual road speed, it preserves proper shift points and keeps electronic stability control functioning as intended. It’s an ideal upgrade for 4Runner owners who lift and fit larger tires and want reliable instrumentation without dealership recalibration hassles.