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Jim's Speedometer World

AA 0.8000, 20% Slow down Speedometer Ratio Adapter

AA 0.8000, 20% Slow down Speedometer Ratio Adapter

$167.99 USD
$187.99 USD $167.99 USD
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  • Compatibility: DODGE - GM - CHEVROLET and more!
  • New Assembly, includes 4 piece key end kit
  • Made in USA

CUSTOM RATIO ADAPTER AVAILABLE HERE



✅ Compatible with 7/8 by 18 thread speedometer cables
✅ All ratio adapters include the 4 piece key-way kit
✅ For use on the transmission/transfer case side
❌ Not compatible with any FORD application
❌ These adapters will not fit behind the speedometer cluster

Die-cast aluminum and zinc oxide metal construction.
Direct replacement for the plastic OEM adapter.

This speedometer ratio adapter will slow down your speedometer reading.

Needed if your speedometer displays a higher number than your GPS reading.

10% Slow down

AA09000

Ratio 0.9000

17.6% Slow down

AA08241

Ratio: 0.8241

20% Slow down

AA08000

Ratio: 0.8000

26.7% Slow down

AA07333

Ratio: 0.7333

28.5% Slow down

AA07143

Ratio: 0.7143

37.5% Slow down

AA06250

Ratio: 0.6250

50% Slow down

AA05000

Ratio: 0.5000


Use the -37.5% adapter to convert Kilometers per hour to MPH.

If you recently changed wheels and/or tires, and your speedometer is now reading incorrectly, a ratio adapter may be required.

Select the Slow Down Rate for your specific application.

If you need assistance calculating your percentage, send us a brief email with these clean speed readings to: jim@speedometer.world
(Straight cable, without any previous adapters in place)

The GPS displays:
 But your Speedometer displays:
40 mph
 ??
50 mph
 ??
60 mph
 ??

Be sure to give us these readings in this exact order, 40mph - 50mph - 60mph on the GPS versus what your Speedometer displays, to ensure the proper percentage.
NOTE: If your original 7713 keyway was bound up and twisted in half, it was overtightened during installation.

Make sure that you install the 7713 drive tip nice and snug, but be careful not to over-tighten because that will cause it to get in a bind and snap.

REPLACEMENT #7713 KEY AVAILABLE HERE!



☆ Made in USA ☆

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WE CAN HELP!

📧 Having trouble with your speedometer not agreeing with the GPS?

Send us a brief message with your current application specs and we can help you mastermind a solution!

EMAIL US!