Speedometer Calibrator | Inline | Ram 1500/2500/3500 2Wd/4Wd (2019-2023) | Restore Speedometer Accuracy For Larger Tires: Complete Your Lift Upgrade With Rough Country'S Speedometer Calibration Device. Specifically Engineered For Lifted Vehicles With Oversized Tires, This Easy-To-Use Calibrator Reprograms Your Speedometer To Deliver Precise, True-Speed Readings, Eliminating Guesswork On The Road Or Trail. Seamless Plug & Play Installation: Installation Is Fast And Hassle-Free Thanks To A Simple Plug And Play Connection Through Your Vehicle'S Diagnostic Link Connector Port. In Just A Short Session, Your Speedometer Is Recalibrated To Match Your New Tire Size Without The Need For Complex Tools Or Programming Knowledge. Enhanced Ecm Shift Point Adjustments: This Advanced Device Doesn'T Just Update Your Dashboard, It Updates Your Vehicle'S Ecm To Optimize Transmission Shift Points. That Means Smoother Shifting Performance Tailored To Your New Tire Configuration For A More Refined Driving Experience. Maintains Electronic Stability Control Performance: Rough Country'S Calibrator Also Recalibrates Your Electronic Stability Control System, Ensuring Your Vehicle Retains Factory-Intended Handling And Safety Even After Upgrading To Larger Tires.Convenient Return To Stock Settings: Need To Revert Back To Factory Calibration? The Device Includes An Easy Reset Feature That Lets You Restore Stock Settings Anytime, Ideal For Vehicle Servicing. Warranty-Backed Peace Of Mind: Backed By Rough Country'S 1-Year Warranty, You Can Recalibrate With Confidence Knowing Your Investment Is Protected. | 2 | 5 | 6.75 | 1.00Lbs | Rough Country | 90047