ROUGH COUNTRY Speedometer Calibrator Inline | Toyota 4Runner

The Rough Country Inline Speedometer Calibrator is the definitive solution to correct the speedometer and odometer readings on your Toyota 4Runner 4WD (2019-2023) after installing larger diameter tires or modifying the differential gear ratio. Essential after a lift and big tire upgrade.

• Plug & Play installation: connects directly to the speed sensor, no cutting or soldering required.
• No software or programmer needed: adjustment via DIP switches, fast and simple.
• Compatible with tires up to 44 inches and multiple gear ratios.
• Corrects speedometer, odometer, automatic shift points and average fuel economy.
• Rough Country quality with high-reliability electronic components.

After installing a lift kit and larger tires on your 4Runner, the speedometer will read lower than actual speed and the ECU will receive incorrect data, affecting automatic transmission shifting and fuel consumption. This calibrator solves the problem at its root, restoring accuracy to all vehicle systems. Installation in under 30 minutes following the included instructions.