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About the Yellow Box

We supply high quality products for motorcycle and automotive use.
Our product reliability and product support receive the highest respect worldwide.



New Product Update! - 14th August 2021

We are very excited to announce our New Yellow Box Product is almost ready for shipping. All pre-orders will be shipping out over the next few weeks. Automated AusPost parcel tracking will be sent to the email provided with your order. We will be emailing everyone about your pre-order and checking we have your correct shipping address and details, please email us if you have not received our email. Thank you. :)

The New Yellow Box Product has a dip switch to set the speedo correction. Yes, we heard your feedback that you prefer the dip switch method for setting the speedo correction.

The New Yellow Box Product is compatible with BOTH "2-wire" and 3-wire vehicle speed sensors, in the one product. Has a speedo correction range from 1:10 to 10:1. And, as always, every Yellow Box product has our same trusted 10 Year New Replacement Warranty, and our legendary reliability!

The New Yellow Box Product has Plug-n-play Harness available for most motorcycles. Plug-n-play Harness available for some vehicles with 3-wire Hall-effect Output Speed Sensor. Splice Harness only is available for vehicles with "2-wire" inductive coil type Output Speed Sensor.


The New Yellow Box Product will be offered at a higher price, which will also include the increased shipping costs that we have been absorbing this past 12 months during the Covid Pandemic. For a limited time between now and when the New Yellow Box Product is available you may like to pre-order the New Yellow Box Product at the current Yellow Box v5 pricing which will also include for free the shipping cost increases. This offer will only be available for a limited time, between now and July 2021. So get in quick! :) Order Now.

Thank you all so very much for your encouragement and repeated patrionage during the past 22 years that we have been in business with the Yellow Box Speedo Recalibrator, and especially for all your kind patience and ongoing support this past challenging year or so with all our massive delays. We are sincerely very sorry to everyone that we have inconvenienced by our many delays this past year. Our thoughts go out to everyone that has been negatively impacted during the Covid-19 Pandemic. We hope that you are safe and well. Thank you. :)



Yellow Box Speedometer Recalibration
Acknowledged as the world's best speedo recalibrator due to it's advanced features
and tiny size, the Yellow Box corrects the speedometer and odometer of any
vehicle that uses a hall-effect speed sensor to generate the speedometer signal.

Motorcycles; sportsbikes, Harley Davidson, cruisers, road, trail, trikes,
custom bikes, racing, snowmobiles. Cars and trucks; sportscars, 2WDs,
4WDs, pickup trucks, utes, off-road vehicles, kit cars and custom cars.

Trusted performance and a 10 year warranty!

There are many causes of speedometer error;
  • Stock vehicle speedos can read 2-10% fast (ie. direct from the manufacturer).
  • Gearing changes; transmission, differential, changing sprockets, chain, etc.
  • Wheel size, wheel diameter and/or tyre size changes.
  • Engine transplant, bike engine in kit cars.
  • Instrument cluster, dash or speedo faceplate swapping.


    Plug-N-play Yellow Box for motorcycles, some vehicles, some 4WDs.
    No need to splice your bikes wiring simply plug into the speed sensor coupler.
    Custom made plug-N-play for your bike.


    Thank you for visiting YellR,
    Home of the Yellow Box - "The world's best Speedo Recalibrator!"

    Our website policy.
    All content Copyright © 1998 - 2021 YellR.
    Last updated August 14, 2021.


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