Inline Speedometer Calibrator 2019-2021 Toyota 4Runner
All valid gear ratios supported
Tire Sizes Lower limit 50% of stock tire size - no upper limit
Internet Updateable
Not for sale or use in California
Hypertech?s In-line Speedometer Calibrator Module is an in-line module to correct your computer readings for non-stock tire sizre sizes and/or rear gear ratios.