Speedometer Calibrator | Multiple Makes & Models (Jeep/Ram) | Restore Accuracy After Bigger Tires: Put The Finishing Touch On Your Lifted Ride With Rough Country'S Speedometer Calibration Device. Designed For Larger Tire Setups, This Easy-To-Use Calibrator Ensures Your Speedometer Displays True Readings - No More Guessing Your Actual Speed.Plug-And-Play Simplicity: Installation Is Quick And Hassle-Free. Just Connect The Device To Your Vehicle'S Diagnostic Link Connector Port And In Minutes Your Speedometer, Shift Points, And Stability Control Are All Recalibrated To Factory Precision.Optimized Performance And Control: Unlike Simple Readout Changes, Rough Country'S Calibrator Updates Your Vehicle'S Ecm To Maintain Accurate Shift Timing And Reliable Electronic Stability Control, Keeping Your Driving Experience Smooth And Safe.Built-In Diagnostic Reader: Manage "Check Engine" And "Service" Lights With Ease. The Calibrator Reads And Clears Diagnostic Trouble Codes And Even Allows You To Return To Stock Settings Whenever Needed - Perfect Before Servicing Your Vehicle.Reliable And Backed By Warranty: Enjoy Peace Of Mind Knowing Your Investment Is Protected By Rough Country'S 1-Year Warranty. Get Professional-Grade Calibration And Full System Compatibility At An Unbeatable Value. | 2 | 5 | 6.75 | 0.85Lbs | Rough Country | 90019