Rough Country Speedometer Calibrator Jeep Wrangler JL 2018-2023/ Gladiator 2020-2023

Rough Country:


  • Resets Your Speedometer
  • Updates ECM Shift Points
  • Reads Basic Diagnostic Codes
  • Easy Plug-N-Play Connection

Rough Country Speedometer Calibrator for 2018, 2019, 2020, 2021, 2022, and 2023 Jeep JL Wranglers and all 2020, 2021, 2022, and 2023 Jeep Gladiators.

Make sure the upgraded wheels and tires you install onto your new 2018-2023 Jeep JL Wrangler or your 2020-2023 Jeep Gladiator don't keep it from reaching peak performance potential! Order this easy-to-use Rough Country Speedometer Calibrator (90019_B) today from CJ Pony Parts!

Features and Benefits:
- Works with all 2018-2023 Jeep Wrangler JLs and 2020-2023 Jeep Gladiators
- Resets your Jeep's speedometer to accurate readings for larger tires
- Easy plug-and-play connection
- Updates OE ECM shift points to accommodate larger tires
- Recalibrates Electronic Stability Control for larger tires
- Reads basic diagnostic codes like 'check engine light'
- Also includes the option to return settings to stock

Rough Country understands that you want your new Jeep to be as efficient as possible, so make sure the on-board computer is functioning properly by recalibrating it to your correct tire size! This plug-and-play tool will allow you to reset your speedometer, update the OE ECM shift points and recalibrate the Electronic Stability Control all to work with larger, more aggressive off-road tires. Your new tool will easily connect to your Jeep's diagnostic link connector port, so you'll also be able to read basic codes like 'check engine light', meaning you can use it for more than just re-calibrating for larger tires. It's the perfect way to ensure that your new Wrangler JL is up to snuff, so don't wait and grab your new tool now from CJ's!

*A separate calibration tool is also available for Jeep JK Wranglers (RC90007A).

Additional Notes:
- This Speedometer calibrator is not designed for models with adaptive cruise control or models equipped with the 3.0L EcoDiesel.
- This Speedometer calibrator is not for sale or use in the state of California.

Vehicle Fitment:
- 2018-2023 Jeep JL Wrangler
- 2020-2023 Jeep Gladiator

California Residents: Proposition 65 Warning

Note: This item is not CARB (California Air Resource Board) exempt and is not legal for sale or use in the state of California.

Installation Difficulty


Novice skill is required for this installation.

Vehicle Fitment

This product will fit the following Gladiator years:

  • 2020,
  • 2021,
  • 2022,
  • 2023,

This product will fit the following Wrangler years:

  • 2018,
  • 2019,
  • 2020,
  • 2021,
  • 2022,
  • 2023,
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