2020-2025
Installation Time
(approx) 15 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
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Hypertech Spectrum Speedometer Calibrator (20-23 Jeep Gladiator JT)Find parts that fit my vehicle
Item JG16251
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3 Reviews
Our Price
$239.95 each
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Description
Calibrate Your Vehicle. Changing tire sizes or gears can throw off the speedometer on your Gladiator JT and give you false speed readings. Ensure you always know your true speed with this Hypertech Spectrum Speedometer Calibrator, so you can always drive within the speed limit and never have to worry about getting a speeding ticket.
Easy to Use. The large backlit 4.30-inch LCD color screen makes viewing and navigating the menu easy even under direct sunlight. The small size of the calibrator makes it easy to handle while in use.
Multiple Parameter Adjustments. This calibrator can re-program the speedometer for tire sizes up to 54 inches. It can also adjust for upgrades of ring and pinion gear sets with different rear gear ratios. In addition, DTC read and clear, and return to factory settings can also be done using this unit.
Quick Computer Access. The included USB cable makes connecting this calibrator to a computer quick and easy. Calibration can be easily updated via the Internet.
Application. This Hypertech Spectrum Speedometer Calibrator will work with all 2020-2023 Jeep Gladiator JT models.
Hypertech 3400
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Speedometer Calibrator
- (1) USB Cable
- (1) Software CD
4.3
Customer Reviews (3)
Review Summary
Installation Time: Less than 1 Hour
Nov 21, 2024
2023 Willys Sport - Deweys
Installation Time: Less than 1 Hour
Great price on a must have!
This is a must have if your a Jeep gladiator or wrangler owner who wants to switch tire size! It’s easy to operate and this company has the best price on these! I seen these as much as 100.00 more then extreme terrain sells them for! Fast shipping as well.
Bang For Your Buck 0/5
Dec 30, 2023
2020 Sport - RyanC
Installation Time: Less than 1 Hour
Meh
Not as easy to install as I thought it should be. Fast shipping as usual and great customer service
Bang For Your Buck 3/5
Oct 22, 2022
Review shared from Hypertech Spectrum Speedometer Calibrator (18-23 Jeep Wrangler JL, Excluding Rubicon 392)
2022 Wrangler - cmcwky
Installation Time: Less than 1 Hour
Easy to use
I bought is for my 2022 Wrangler Unlimited, it was straight foward and easy to use.
Bang For Your Buck 5/5
Reviews of Hypertech Tuner products have an average rating of 4.3 out of 5
Mar 18, 2025
Review shared from Hypertech REACT Performance Throttle Optimizer (05-19 Tacoma)
2008 Pre Runner -
just connects
plug and pkay horray i love this this saves me gas when iu want and make me go fater when i ewant i can even beat helcts YAYAYAYAYYAYA
Sep 2, 2024
Review shared from Hypertech In-Line Speedometer Calibrator (07-13 Tundra)
2008 SR5 - Stevo619
Must Have Upgrade
If you have large wheels/tires this is a must have! My speedometer was off by a few MPH I noticed after I first went with 37x12.5R20 on my Tundra. The truck would normally cut off at 100mph but afterwards would stop around 89ish plus my MPG’s were really bad! so that’s when I found out about this device which you can install yourself all you gotta do is 1. Download software update from a Microsoft computer 2. Remove your dashboard panel (the one behind your steering wheel), and connect to your dash, plug and play similar to a pedal commander. Made a difference for me!
Nov 12, 2023
Review shared from Hypertech REACT Off-Road Throttle Optimizer (07-18 Jeep Wrangler JK)
2008 Wrangler - SharkBait95
Off Road Throttle
Easy to install, plug and play. Directions were easy to follow. Works great. Each setting is easy to access and works as advertised.
Oct 18, 2023
Review shared from Hypertech Max Energy Spectrum Power Programmer (96-98 5.2L Jeep Grand Cherokee ZJ)
2011 - Orvis
Custom jeep toon tool
Haven't tried it yet will let everyone know how it goes
May 18, 2023
Review shared from Hypertech In-Line Speedometer Calibrator (16-23 Tacoma)
2022 TRD Off-Road - shiznick
Works Great!
This does exactly what it says it does. The software was easy to use, and the installation was straightforward.
Dec 29, 2022
Review shared from Hypertech In-Line Speedometer Calibrator (16-23 Tacoma)
2022 TRD Off-Road - Hunkele3
The only game in town saved me
I recently upsized my 2022 2” lifted Tacoma TRD-Offroad’s tires and wheels to a 275-70-17. The speedometer was noticeably off (especially at higher speed), odometer off too obviously, mpg (calculated by the truck was wayyy off), and the shift points were off also. I had to do something about it, and after much research, realized a speedo calibrator was the ONLY option - Toyota dealership cannot reprogram your ECM, etc with Techstream. I’m happy to say, that this fixed all my issues 100%. Yes, I paid $250 for the unit and $99 for the cheapest windows laptop I could find (of course I don’t own a PC - damnit), but it literally took me 15 minutes to pull apart my instrument cluster from my dash, program the unit for my new tire size, and then put it all back together. And it works! Flawlessly. Thank you so much for having a solution for the 3rd gen Tacoma. I’m so happy my truck feels like it should again. Just an FYI, the software only went up to 2021 (choose that), even if you have a 2022. They just haven’t updated their site yet.
Sep 22, 2022
Review shared from Hypertech In-Line Speedometer Calibrator (16-23 Tacoma)
2022 SR5 - Tacoma124
Nice product
Very nice worth the price makes the truck night and day difference
Jan 18, 2017
Review shared from Hypertech Speedometer Calibrator (07-18 Jeep Wrangler JK)
2017 Wrangler - Kwick7
PERFECT
This was exactly what I needed!! I just bought my 2017 Jeep and first thing I wanted to do was get bigger tires. Jeep dealership said they could not calibrate my speedometer due to 1inch higher than what they have on their machine. SOOOO thankfully this was available for purchase.
Oct 19, 2016
Review shared from Hypertech Speedometer Calibrator (07-18 Jeep Wrangler JK)
2007 Wrangler - majordonkie
Accuarate
Provided me a pretty acurate reading from what i thought. Hypertech did a pretty good job with this one as ive bought one in that past that wasnt that good. Good price for what it does.
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