✅ Reducer Adapter is Compatible with 7/8 by 18 thread speedometer cables

✅ All ratio adapters include the 4 piece key-way kit

✅ Speedometer Ratio Adapter is for use on the transmission/transfer case side

❌ Not compatible with any FORD application (additional mods/adapters needed)

❌ These adapters will not fit behind the speedometer cluster



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% reducer adapter to convert Kilometers 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 / Reducer Rate for your specific application.



Increase Adapters also Available! Check out our STORE!


We can build custom ratios! Send us a PM with your required numbers!



If you need assistance calculating your percentage, send us a brief PM including these specific readings:

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




This process goes easier with two people in the vehicle. 

One person in the passenger seat with a GPS device/cellphone displaying current speed, who will alert the driver at 40mph, 50mph and 60mph.
Then the driver can more accurately relay what their speedometer displays at those 3 intervals.
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 key-way was bound up and twisted in half, it was overtightened during installation.

Ensure 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.


☆ Parts made in the USA, hand-assembled in Louisiana, USA ☆