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Changing tire and gear sizes can have an adverse effect on your speedometer and odometer readings. Hypertech speedometer calibrators will adjust for a wide range of tire sizes and gear changes (not all applications can adjust for gear changes) to keep your speedometer reading properly without the additional cost of buying a complete tuner. Learn More

Correct the speedometer and odometer for tires up to 54 inches, and/or non-stock rear gear ratios. Engineered for consumers that want the speedometer recalibration functions of the Speedometer Calibrator without the additional expense of the other tuning features. Learn More