High quality programmers are required for speedometer corrections and much more for your Jeep Wrangler.

These programmers have been vigorously tested for both quality and accuracy to exceed the demands of our customers who demand the best products for their Jeep vehicles.

Featuring a color screen and simple to use interface, these programmers allow corrections to the speedometer when larger aftermarket tire sizes are installed and many other features allowing you to customize factory installed settings on your Jeep Wrangler.


  • Results and feature sets may vary based on vehicle make, model, and aftermarket upgrades. Read all instructions before installation and/or operation of this product use.
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JKS J-Cal (Flashcal) Programmer for 07-18 JK Wrangler, J-Cal/Flashcal Programmer for 2018 JL Wrangler

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